402313052531 has 8 divisors (see below), whose sum is σ = 433270892880. Its totient is φ = 371356738272.

The previous prime is 402313052503. The next prime is 402313052539. The reversal of 402313052531 is 135250313204.

It is a happy number.

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

It is not a de Polignac number, because 402313052531 - 2³⁰ = 401239310707 is a prime.

It is a super-2 number, since 2×402313052531² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 402313052494 and 402313052503.

It is not an unprimeable number, because it can be changed into a prime (402313052539) 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, 198701 + ... + 918753.

It is an arithmetic number, because the mean of its divisors is an integer number (54158861610).

Almost surely, 2^402313052531 is an apocalyptic number.

402313052531 is a deficient number, since it is larger than the sum of its proper divisors (30957840349).

402313052531 is a wasteful number, since it uses less digits than its factorization.

402313052531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 763045.

The product of its (nonzero) digits is 10800, while the sum is 29.

Adding to 402313052531 its reverse (135250313204), we get a palindrome (537563365735).

The spelling of 402313052531 in words is "four hundred two billion, three hundred thirteen million, fifty-two thousand, five hundred thirty-one".