313031531342 has 4 divisors (see below), whose sum is σ = 469547297016. Its totient is φ = 156515765670.

The previous prime is 313031531327. The next prime is 313031531353. The reversal of 313031531342 is 243135130313.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×313031531342² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78257882834 + ... + 78257882837.

It is an arithmetic number, because the mean of its divisors is an integer number (117386824254).

Almost surely, 2^313031531342 is an apocalyptic number.

313031531342 is a deficient number, since it is larger than the sum of its proper divisors (156515765674).

313031531342 is a wasteful number, since it uses less digits than its factorization.

313031531342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156515765673.

The product of its (nonzero) digits is 9720, while the sum is 29.

Adding to 313031531342 its reverse (243135130313), we get a palindrome (556166661655).

The spelling of 313031531342 in words is "three hundred thirteen billion, thirty-one million, five hundred thirty-one thousand, three hundred forty-two".