31032213313 has 4 divisors (see below), whose sum is σ = 31034035648. Its totient is φ = 31030390980.

The previous prime is 31032213281. The next prime is 31032213347. The reversal of 31032213313 is 31331223013.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 31032213313 - 2⁵ = 31032213281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31032213013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 885381 + ... + 919762.

It is an arithmetic number, because the mean of its divisors is an integer number (7758508912).

Almost surely, 2^31032213313 is an apocalyptic number.

It is an amenable number.

31032213313 is a deficient number, since it is larger than the sum of its proper divisors (1822335).

31032213313 is a wasteful number, since it uses less digits than its factorization.

31032213313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1822334.

The product of its (nonzero) digits is 972, while the sum is 22.

Adding to 31032213313 its reverse (31331223013), we get a palindrome (62363436326).

The spelling of 31032213313 in words is "thirty-one billion, thirty-two million, two hundred thirteen thousand, three hundred thirteen".