31319651029 has 2 divisors, whose sum is σ = 31319651030. Its totient is φ = 31319651028.

The previous prime is 31319651023. The next prime is 31319651039. The reversal of 31319651029 is 92015691313.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 31318380900 + 1270129 = 176970^2 + 1127^2 .

It is a cyclic number.

It is not a de Polignac number, because 31319651029 - 2²³ = 31311262421 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31319650982 and 31319651000.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31319651023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15659825514 + 15659825515.

It is an arithmetic number, because the mean of its divisors is an integer number (15659825515).

Almost surely, 2^31319651029 is an apocalyptic number.

It is an amenable number.

31319651029 is a deficient number, since it is larger than the sum of its proper divisors (1).

31319651029 is an equidigital number, since it uses as much as digits as its factorization.

31319651029 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 43740, while the sum is 40.

The spelling of 31319651029 in words is "thirty-one billion, three hundred nineteen million, six hundred fifty-one thousand, twenty-nine".