31412945 has 8 divisors (see below), whose sum is σ = 38995560. Its totient is φ = 24263680.

The previous prime is 31412939. The next prime is 31412959. The reversal of 31412945 is 54921413.

It can be written as a sum of positive squares in 4 ways, for example, as 9247681 + 22165264 = 3041^2 + 4708^2 .

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

It is not a de Polignac number, because 31412945 - 2¹² = 31408849 is a prime.

It is a super-2 number, since 2×31412945² = 1973546227146050, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 108176 + ... + 108465.

It is an arithmetic number, because the mean of its divisors is an integer number (4874445).

Almost surely, 2^31412945 is an apocalyptic number.

It is an amenable number.

31412945 is a deficient number, since it is larger than the sum of its proper divisors (7582615).

31412945 is a wasteful number, since it uses less digits than its factorization.

31412945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 216675.

The product of its digits is 4320, while the sum is 29.

The square root of 31412945 is about 5604.7252385822. The cubic root of 31412945 is about 315.5267745843.

The spelling of 31412945 in words is "thirty-one million, four hundred twelve thousand, nine hundred forty-five".