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31313420401 = 415912944779
BaseRepresentation
bin11101001010011011…
…001110000001110001
32222211021201120110011
4131022123032001301
51003112213423101
622215111134521
72155655452564
oct351233160161
988737646404
1031313420401
111230967823a
12609a974441
132c5051b733
141730a604db
15c340ba751
hex74a6ce071

31313420401 has 8 divisors (see below), whose sum is σ = 32620845600. Its totient is φ = 30031884960.

The previous prime is 31313420377. The next prime is 31313420429. The reversal of 31313420401 is 10402431313.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 31313420401 - 27 = 31313420273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31313420431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6469971 + ... + 6474808.

It is an arithmetic number, because the mean of its divisors is an integer number (4077605700).

Almost surely, 231313420401 is an apocalyptic number.

It is an amenable number.

31313420401 is a deficient number, since it is larger than the sum of its proper divisors (1307425199).

31313420401 is a wasteful number, since it uses less digits than its factorization.

31313420401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12944879.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 31313420401 its reverse (10402431313), we get a palindrome (41715851714).

The spelling of 31313420401 in words is "thirty-one billion, three hundred thirteen million, four hundred twenty thousand, four hundred one".

Divisors: 1 41 59 2419 12944779 530735939 763741961 31313420401