31255841 has 2 divisors, whose sum is σ = 31255842. Its totient is φ = 31255840.

The previous prime is 31255837. The next prime is 31255897. The reversal of 31255841 is 14855213.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30481441 + 774400 = 5521^2 + 880^2 .

It is a cyclic number.

It is not a de Polignac number, because 31255841 - 2² = 31255837 is a prime.

It is not a weakly prime, because it can be changed into another prime (31257841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15627920 + 15627921.

It is an arithmetic number, because the mean of its divisors is an integer number (15627921).

Almost surely, 2^31255841 is an apocalyptic number.

It is an amenable number.

31255841 is a deficient number, since it is larger than the sum of its proper divisors (1).

31255841 is an equidigital number, since it uses as much as digits as its factorization.

31255841 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4800, while the sum is 29.

The square root of 31255841 is about 5590.6923542617. The cubic root of 31255841 is about 314.9998857814. Note that the first 3 decimals are identical.

The spelling of 31255841 in words is "thirty-one million, two hundred fifty-five thousand, eight hundred forty-one".