431312310402 has 16 divisors (see below), whose sum is σ = 862632338880. Its totient is φ = 143769483792.

The previous prime is 431312310397. The next prime is 431312310419. The reversal of 431312310402 is 204013213134.

It is a happy number.

It is a super-3 number, since 3×431312310402³ (a number of 36 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 614499 + ... + 1113657.

It is an arithmetic number, because the mean of its divisors is an integer number (53914521180).

Almost surely, 2^431312310402 is an apocalyptic number.

431312310402 is an abundant number, since it is smaller than the sum of its proper divisors (431320028478).

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

431312310402 is a wasteful number, since it uses less digits than its factorization.

431312310402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 643177.

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 431312310402 its reverse (204013213134), we get a palindrome (635325523536).

The spelling of 431312310402 in words is "four hundred thirty-one billion, three hundred twelve million, three hundred ten thousand, four hundred two".