31401031313 has 8 divisors (see below), whose sum is σ = 34693723008. Its totient is φ = 28268958784.

The previous prime is 31401031309. The next prime is 31401031327. The reversal of 31401031313 is 31313010413.

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

It is a cyclic number.

It is not a de Polignac number, because 31401031313 - 2² = 31401031309 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31401031213) 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, 40154381 + ... + 40155162.

It is an arithmetic number, because the mean of its divisors is an integer number (4336715376).

Almost surely, 2^31401031313 is an apocalyptic number.

It is an amenable number.

31401031313 is a deficient number, since it is larger than the sum of its proper divisors (3292691695).

31401031313 is a wasteful number, since it uses less digits than its factorization.

31401031313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80309583.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 31401031313 its reverse (31313010413), we get a palindrome (62714041726).

The spelling of 31401031313 in words is "thirty-one billion, four hundred one million, thirty-one thousand, three hundred thirteen".