2972309531 has 2 divisors, whose sum is σ = 2972309532. Its totient is φ = 2972309530.

The previous prime is 2972309477. The next prime is 2972309533. The reversal of 2972309531 is 1359032792.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2972309531 - 2⁶ = 2972309467 is a prime.

It is a super-2 number, since 2×2972309531² = 17669247896146879922, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 2972309533, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2972309533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1486154765 + 1486154766.

It is an arithmetic number, because the mean of its divisors is an integer number (1486154766).

Almost surely, 2^2972309531 is an apocalyptic number.

2972309531 is a deficient number, since it is larger than the sum of its proper divisors (1).

2972309531 is an equidigital number, since it uses as much as digits as its factorization.

2972309531 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 102060, while the sum is 41.

The square root of 2972309531 is about 54518.8915056057. The cubic root of 2972309531 is about 1437.7984509091.

The spelling of 2972309531 in words is "two billion, nine hundred seventy-two million, three hundred nine thousand, five hundred thirty-one".