31044131321 has 8 divisors (see below), whose sum is σ = 36623491584. Its totient is φ = 25750892160.

The previous prime is 31044131317. The next prime is 31044131401. The reversal of 31044131321 is 12313144013.

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

It is not a de Polignac number, because 31044131321 - 2² = 31044131317 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31044131221) 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, 71530040 + ... + 71530473.

It is an arithmetic number, because the mean of its divisors is an integer number (4577936448).

Almost surely, 2^31044131321 is an apocalyptic number.

31044131321 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

31044131321 is a deficient number, since it is larger than the sum of its proper divisors (5579360263).

31044131321 is a wasteful number, since it uses less digits than its factorization.

31044131321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143060551.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 31044131321 its reverse (12313144013), we get a palindrome (43357275334).

The spelling of 31044131321 in words is "thirty-one billion, forty-four million, one hundred thirty-one thousand, three hundred twenty-one".