31452137 has 2 divisors, whose sum is σ = 31452138. Its totient is φ = 31452136.

The previous prime is 31452131. The next prime is 31452173. The reversal of 31452137 is 73125413.

Together with next prime (31452173) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17732521 + 13719616 = 4211^2 + 3704^2 .

It is a cyclic number.

It is not a de Polignac number, because 31452137 - 2⁴ = 31452121 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (31452131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15726068 + 15726069.

It is an arithmetic number, because the mean of its divisors is an integer number (15726069).

Almost surely, 2^31452137 is an apocalyptic number.

It is an amenable number.

31452137 is a deficient number, since it is larger than the sum of its proper divisors (1).

31452137 is an equidigital number, since it uses as much as digits as its factorization.

31452137 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2520, while the sum is 26.

The square root of 31452137 is about 5608.2204842534. The cubic root of 31452137 is about 315.6579411686.

The spelling of 31452137 in words is "thirty-one million, four hundred fifty-two thousand, one hundred thirty-seven".