31422737997 has 112 divisors (see below), whose sum is σ = 55210595328. Its totient is φ = 17504398080.

The previous prime is 31422737959. The next prime is 31422738013. The reversal of 31422737997 is 79973722413.

It is not a de Polignac number, because 31422737997 - 2¹⁶ = 31422672461 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31422757997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 111 ways as a sum of consecutive naturals, for example, 60312097 + ... + 60312617.

It is an arithmetic number, because the mean of its divisors is an integer number (492951744).

Almost surely, 2^31422737997 is an apocalyptic number.

It is an amenable number.

31422737997 is a deficient number, since it is larger than the sum of its proper divisors (23787857331).

31422737997 is an equidigital number, since it uses as much as digits as its factorization.

31422737997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 822 (or 807 counting only the distinct ones).

The product of its digits is 4000752, while the sum is 54.

The spelling of 31422737997 in words is "thirty-one billion, four hundred twenty-two million, seven hundred thirty-seven thousand, nine hundred ninety-seven".