402432131115 has 72 divisors (see below), whose sum is σ = 841487839920. Its totient is φ = 183968947008.

The previous prime is 402432131113. The next prime is 402432131141. The reversal of 402432131115 is 511131234204.

402432131115 is a `hidden beast` number, since 4 + 0 + 24 + 321 + 311 + 1 + 5 = 666.

It is not a de Polignac number, because 402432131115 - 2¹ = 402432131113 is a prime.

It is a super-2 number, since 2×402432131115² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (402432131113) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 3320260 + ... + 3439329.

It is an arithmetic number, because the mean of its divisors is an integer number (11687331110).

Almost surely, 2^402432131115 is an apocalyptic number.

402432131115 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

402432131115 is an abundant number, since it is smaller than the sum of its proper divisors (439055708805).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

402432131115 is an equidigital number, since it uses as much as digits as its factorization.

402432131115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6759623 (or 6759604 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

Adding to 402432131115 its reverse (511131234204), we get a palindrome (913563365319).

The spelling of 402432131115 in words is "four hundred two billion, four hundred thirty-two million, one hundred thirty-one thousand, one hundred fifteen".