31129232153 has 2 divisors, whose sum is σ = 31129232154. Its totient is φ = 31129232152.

The previous prime is 31129232107. The next prime is 31129232177. The reversal of 31129232153 is 35123292113.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28585341184 + 2543890969 = 169072^2 + 50437^2 .

It is a cyclic number.

It is not a de Polignac number, because 31129232153 - 2¹⁴ = 31129215769 is a prime.

It is not a weakly prime, because it can be changed into another prime (31129232353) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15564616076 + 15564616077.

It is an arithmetic number, because the mean of its divisors is an integer number (15564616077).

Almost surely, 2^31129232153 is an apocalyptic number.

It is an amenable number.

31129232153 is a deficient number, since it is larger than the sum of its proper divisors (1).

31129232153 is an equidigital number, since it uses as much as digits as its factorization.

31129232153 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9720, while the sum is 32.

The spelling of 31129232153 in words is "thirty-one billion, one hundred twenty-nine million, two hundred thirty-two thousand, one hundred fifty-three".