31963261371 has 8 divisors (see below), whose sum is σ = 42661306704. Its totient is φ = 21287028480.

The previous prime is 31963261339. The next prime is 31963261409. The reversal of 31963261371 is 17316236913.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 31963261371 - 2⁵ = 31963261339 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31963261301) 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 7 ways as a sum of consecutive naturals, for example, 5449690 + ... + 5455551.

It is an arithmetic number, because the mean of its divisors is an integer number (5332663338).

Almost surely, 2^31963261371 is an apocalyptic number.

31963261371 is a deficient number, since it is larger than the sum of its proper divisors (10698045333).

31963261371 is a wasteful number, since it uses less digits than its factorization.

31963261371 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10906221.

The product of its digits is 122472, while the sum is 42.

The spelling of 31963261371 in words is "thirty-one billion, nine hundred sixty-three million, two hundred sixty-one thousand, three hundred seventy-one".