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20402131041223 = 695923743123479
BaseRepresentation
bin1001010001110001111011…
…10001011111101111000111
32200020102110120221222122021
410220320331301133233013
510133232031021304343
6111220335401544011
74204001553333031
oct450707561375707
980212416858567
1020402131041223
11655654a0aa228
1223560a04a5007
13b4cbb328aac9
1450767b46ac51
15255a8d8c90ed
hex128e3dc5fbc7

20402131041223 has 8 divisors (see below), whose sum is σ = 20406087475200. Its totient is φ = 20398174915608.

The previous prime is 20402131041211. The next prime is 20402131041241. The reversal of 20402131041223 is 32214013120402.

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 20402131041223 - 237 = 20264692087751 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20402131041023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 165165798 + ... + 165289276.

It is an arithmetic number, because the mean of its divisors is an integer number (2550760934400).

Almost surely, 220402131041223 is an apocalyptic number.

20402131041223 is a deficient number, since it is larger than the sum of its proper divisors (3956433977).

20402131041223 is a wasteful number, since it uses less digits than its factorization.

20402131041223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154181.

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 20402131041223 its reverse (32214013120402), we get a palindrome (52616144161625).

The spelling of 20402131041223 in words is "twenty trillion, four hundred two billion, one hundred thirty-one million, forty-one thousand, two hundred twenty-three".

Divisors: 1 6959 23743 123479 165227537 859290361 2931761897 20402131041223