31025145329 has 2 divisors, whose sum is σ = 31025145330. Its totient is φ = 31025145328.

The previous prime is 31025145311. The next prime is 31025145373. The reversal of 31025145329 is 92354152013.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30818504704 + 206640625 = 175552^2 + 14375^2 .

It is a cyclic number.

It is not a de Polignac number, because 31025145329 - 2¹⁶ = 31025079793 is a prime.

It is not a weakly prime, because it can be changed into another prime (31025145379) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15512572664 + 15512572665.

It is an arithmetic number, because the mean of its divisors is an integer number (15512572665).

Almost surely, 2^31025145329 is an apocalyptic number.

It is an amenable number.

31025145329 is a deficient number, since it is larger than the sum of its proper divisors (1).

31025145329 is an equidigital number, since it uses as much as digits as its factorization.

31025145329 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32400, while the sum is 35.

The spelling of 31025145329 in words is "thirty-one billion, twenty-five million, one hundred forty-five thousand, three hundred twenty-nine".