402312031402 has 16 divisors (see below), whose sum is σ = 619901955072. Its totient is φ = 195680221200.

The previous prime is 402312031399. The next prime is 402312031403. The reversal of 402312031402 is 204130213204.

It is a super-2 number, since 2×402312031402² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (402312031403) 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, 169474 + ... + 912877.

It is an arithmetic number, because the mean of its divisors is an integer number (38743872192).

Almost surely, 2^402312031402 is an apocalyptic number.

402312031402 is a deficient number, since it is larger than the sum of its proper divisors (217589923670).

402312031402 is a wasteful number, since it uses less digits than its factorization.

402312031402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1087413.

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 402312031402 its reverse (204130213204), we get a palindrome (606442244606).

The spelling of 402312031402 in words is "four hundred two billion, three hundred twelve million, thirty-one thousand, four hundred two".