31396553 has 2 divisors, whose sum is σ = 31396554. Its totient is φ = 31396552.

The previous prime is 31396549. The next prime is 31396567. The reversal of 31396553 is 35569313.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27962944 + 3433609 = 5288^2 + 1853^2 .

It is a cyclic number.

It is not a de Polignac number, because 31396553 - 2² = 31396549 is a prime.

It is not a weakly prime, because it can be changed into another prime (31396513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15698276 + 15698277.

It is an arithmetic number, because the mean of its divisors is an integer number (15698277).

Almost surely, 2^31396553 is an apocalyptic number.

It is an amenable number.

31396553 is a deficient number, since it is larger than the sum of its proper divisors (1).

31396553 is an equidigital number, since it uses as much as digits as its factorization.

31396553 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36450, while the sum is 35.

The square root of 31396553 is about 5603.2627102430. The cubic root of 31396553 is about 315.4718819831.

The spelling of 31396553 in words is "thirty-one million, three hundred ninety-six thousand, five hundred fifty-three".