31551010429 has 2 divisors, whose sum is σ = 31551010430. Its totient is φ = 31551010428.

The previous prime is 31551010391. The next prime is 31551010471. The reversal of 31551010429 is 92401015513.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17709487929 + 13841522500 = 133077^2 + 117650^2 .

It is a cyclic number.

It is not a de Polignac number, because 31551010429 - 2¹⁷ = 31550879357 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 31551010429.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31551010489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15775505214 + 15775505215.

It is an arithmetic number, because the mean of its divisors is an integer number (15775505215).

Almost surely, 2^31551010429 is an apocalyptic number.

It is an amenable number.

31551010429 is a deficient number, since it is larger than the sum of its proper divisors (1).

31551010429 is an equidigital number, since it uses as much as digits as its factorization.

31551010429 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5400, while the sum is 31.

The spelling of 31551010429 in words is "thirty-one billion, five hundred fifty-one million, ten thousand, four hundred twenty-nine".