31513434011 has 8 divisors (see below), whose sum is σ = 32120080944. Its totient is φ = 30912537600.

The previous prime is 31513433989. The next prime is 31513434041. The reversal of 31513434011 is 11043431513.

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 31513434011 - 2¹⁴ = 31513417627 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31513434041) 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, 1426565 + ... + 1448486.

It is an arithmetic number, because the mean of its divisors is an integer number (4015010118).

Almost surely, 2^31513434011 is an apocalyptic number.

31513434011 is a deficient number, since it is larger than the sum of its proper divisors (606646933).

31513434011 is a wasteful number, since it uses less digits than its factorization.

31513434011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2875261.

The product of its (nonzero) digits is 2160, while the sum is 26.

Adding to 31513434011 its reverse (11043431513), we get a palindrome (42556865524).

The spelling of 31513434011 in words is "thirty-one billion, five hundred thirteen million, four hundred thirty-four thousand, eleven".