31341137 has 2 divisors, whose sum is σ = 31341138. Its totient is φ = 31341136.

The previous prime is 31341113. The next prime is 31341161. The reversal of 31341137 is 73114313.

It is a balanced prime because it is at equal distance from previous prime (31341113) and next prime (31341161).

It can be written as a sum of positive squares in only one way, i.e., 31315216 + 25921 = 5596^2 + 161^2 .

It is an emirp because it is prime and its reverse (73114313) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 31341137 - 2¹² = 31337041 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (31341197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15670568 + 15670569.

It is an arithmetic number, because the mean of its divisors is an integer number (15670569).

Almost surely, 2^31341137 is an apocalyptic number.

It is an amenable number.

31341137 is a deficient number, since it is larger than the sum of its proper divisors (1).

31341137 is an equidigital number, since it uses as much as digits as its factorization.

31341137 is an evil number, because the sum of its binary digits is even.

The product of its digits is 756, while the sum is 23.

The square root of 31341137 is about 5598.3155502347. The cubic root of 31341137 is about 315.2861664210.

The spelling of 31341137 in words is "thirty-one million, three hundred forty-one thousand, one hundred thirty-seven".