31021142029 has 2 divisors, whose sum is σ = 31021142030. Its totient is φ = 31021142028.

The previous prime is 31021142027. The next prime is 31021142039. The reversal of 31021142029 is 92024112013.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22297955625 + 8723186404 = 149325^2 + 93398^2 .

It is a cyclic number.

It is not a de Polignac number, because 31021142029 - 2¹ = 31021142027 is a prime.

It is a super-2 number, since 2×31021142029² (a number of 22 digits) contains 22 as substring.

Together with 31021142027, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 31021141994 and 31021142012.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31021142027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15510571014 + 15510571015.

It is an arithmetic number, because the mean of its divisors is an integer number (15510571015).

Almost surely, 2^31021142029 is an apocalyptic number.

It is an amenable number.

31021142029 is a deficient number, since it is larger than the sum of its proper divisors (1).

31021142029 is an equidigital number, since it uses as much as digits as its factorization.

31021142029 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 25.

The spelling of 31021142029 in words is "thirty-one billion, twenty-one million, one hundred forty-two thousand, twenty-nine".