31460881 has 9 divisors (see below), whose sum is σ = 32319273. Its totient is φ = 30625140.

The previous prime is 31460879. The next prime is 31460917. The reversal of 31460881 is 18806413.

The square root of 31460881 is 5609.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 31460881 - 2¹ = 31460879 is a prime.

It is a super-2 number, since 2×31460881² = 1979574066592322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31460831) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 398200 + ... + 398278.

Almost surely, 2^31460881 is an apocalyptic number.

31460881 is the 5609-th square number.

31460881 is the 2805-th centered octagonal number.

It is an amenable number.

31460881 is a deficient number, since it is larger than the sum of its proper divisors (858392).

31460881 is an frugal number, since it uses more digits than its factorization.

31460881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 300 (or 150 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 31.

The cubic root of 31460881 is about 315.6871904509.

The spelling of 31460881 in words is "thirty-one million, four hundred sixty thousand, eight hundred eighty-one".