31449216965 has 8 divisors (see below), whose sum is σ = 37793679648. Its totient is φ = 25122960720.

The previous prime is 31449216947. The next prime is 31449216973. The reversal of 31449216965 is 56961294413.

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

It is not a de Polignac number, because 31449216965 - 2¹⁸ = 31448954821 is a prime.

It is a super-2 number, since 2×31449216965² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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, 4547807 + ... + 4554716.

It is an arithmetic number, because the mean of its divisors is an integer number (4724209956).

Almost surely, 2^31449216965 is an apocalyptic number.

It is an amenable number.

31449216965 is a deficient number, since it is larger than the sum of its proper divisors (6344462683).

31449216965 is an equidigital number, since it uses as much as digits as its factorization.

31449216965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9103219.

The product of its digits is 1399680, while the sum is 50.

The spelling of 31449216965 in words is "thirty-one billion, four hundred forty-nine million, two hundred sixteen thousand, nine hundred sixty-five".