31088013 has 8 divisors (see below), whose sum is σ = 45218976. Its totient is φ = 18841200.

The previous prime is 31087997. The next prime is 31088023.

31088013 is nontrivially palindromic in base 10.

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

It is not a de Polignac number, because 31088013 - 2⁴ = 31087997 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31088023) 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, 470998 + ... + 471063.

It is an arithmetic number, because the mean of its divisors is an integer number (5652372).

Almost surely, 2^31088013 is an apocalyptic number.

31088013 is a gapful number since it is divisible by the number (33) formed by its first and last digit.

It is an amenable number.

31088013 is a deficient number, since it is larger than the sum of its proper divisors (14130963).

31088013 is a wasteful number, since it uses less digits than its factorization.

31088013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 942075.

The product of its (nonzero) digits is 576, while the sum is 24.

The square root of 31088013 is about 5575.6625615258. The cubic root of 31088013 is about 314.4350771649.

The spelling of 31088013 in words is "thirty-one million, eighty-eight thousand, thirteen".