31020424429 has 2 divisors, whose sum is σ = 31020424430. Its totient is φ = 31020424428.

The previous prime is 31020424411. The next prime is 31020424441. The reversal of 31020424429 is 92442402013.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28589737225 + 2430687204 = 169085^2 + 49302^2 .

It is a cyclic number.

It is not a de Polignac number, because 31020424429 - 2²⁹ = 30483553517 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 31020424429.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31020424129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15510212214 + 15510212215.

It is an arithmetic number, because the mean of its divisors is an integer number (15510212215).

Almost surely, 2^31020424429 is an apocalyptic number.

It is an amenable number.

31020424429 is a deficient number, since it is larger than the sum of its proper divisors (1).

31020424429 is an equidigital number, since it uses as much as digits as its factorization.

31020424429 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13824, while the sum is 31.

The spelling of 31020424429 in words is "thirty-one billion, twenty million, four hundred twenty-four thousand, four hundred twenty-nine".