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402424243231 = 31101916977507
BaseRepresentation
bin1011101101100100101…
…10101010010000011111
31102110201122012200112011
411312302112222100133
523043131101240411
6504512100052051
741034306425353
oct5666226522037
91373648180464
10402424243231
11145737aa31aa
1265bab094027
132bc439648aa
1415698133463
15a70465cc21
hex5db25aa41f

402424243231 has 16 divisors (see below), whose sum is σ = 416113781760. Its totient is φ = 388779575040.

The previous prime is 402424243217. The next prime is 402424243241. The reversal of 402424243231 is 132342424204.

It is a cyclic number.

It is not a de Polignac number, because 402424243231 - 27 = 402424243103 is a prime.

It is a super-2 number, since 2×4024242432312 (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 402424243193 and 402424243202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402424243211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53602780 + ... + 53610286.

It is an arithmetic number, because the mean of its divisors is an integer number (26007111360).

Almost surely, 2402424243231 is an apocalyptic number.

402424243231 is a deficient number, since it is larger than the sum of its proper divisors (13689538529).

402424243231 is a wasteful number, since it uses less digits than its factorization.

402424243231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10254.

The product of its (nonzero) digits is 36864, while the sum is 31.

Adding to 402424243231 its reverse (132342424204), we get a palindrome (534766667435).

The spelling of 402424243231 in words is "four hundred two billion, four hundred twenty-four million, two hundred forty-three thousand, two hundred thirty-one".

Divisors: 1 31 1019 1697 7507 31589 52607 232717 1729243 7649633 12739379 53606533 237138623 394920749 12981427201 402424243231