31153826129 has 2 divisors, whose sum is σ = 31153826130. Its totient is φ = 31153826128.

The previous prime is 31153826113. The next prime is 31153826131. The reversal of 31153826129 is 92162835113.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30503321104 + 650505025 = 174652^2 + 25505^2 .

It is a cyclic number.

It is not a de Polignac number, because 31153826129 - 2⁴ = 31153826113 is a prime.

Together with 31153826131, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (31153822129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15576913064 + 15576913065.

It is an arithmetic number, because the mean of its divisors is an integer number (15576913065).

Almost surely, 2^31153826129 is an apocalyptic number.

It is an amenable number.

31153826129 is a deficient number, since it is larger than the sum of its proper divisors (1).

31153826129 is an equidigital number, since it uses as much as digits as its factorization.

31153826129 is an evil number, because the sum of its binary digits is even.

The product of its digits is 77760, while the sum is 41.

The spelling of 31153826129 in words is "thirty-one billion, one hundred fifty-three million, eight hundred twenty-six thousand, one hundred twenty-nine".