31412691 has 20 divisors (see below), whose sum is σ = 47528800. Its totient is φ = 20672496.

The previous prime is 31412677. The next prime is 31412701. The reversal of 31412691 is 19621413.

It is not a de Polignac number, because 31412691 - 2⁵ = 31412659 is a prime.

It is a super-2 number, since 2×31412691² = 1973514311722962, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31412671) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 3945 + ... + 8853.

It is an arithmetic number, because the mean of its divisors is an integer number (2376440).

Almost surely, 2^31412691 is an apocalyptic number.

31412691 is a deficient number, since it is larger than the sum of its proper divisors (16116109).

31412691 is an equidigital number, since it uses as much as digits as its factorization.

31412691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5000 (or 4991 counting only the distinct ones).

The product of its digits is 1296, while the sum is 27.

The square root of 31412691 is about 5604.7025790848. The cubic root of 31412691 is about 315.5259241492.

It can be divided in two parts, 3141 and 2691, that added together give a cube (5832 = 18³).

The spelling of 31412691 in words is "thirty-one million, four hundred twelve thousand, six hundred ninety-one".