31306701969 has 9 divisors (see below), whose sum is σ = 45221558473. Its totient is φ = 20870780772.

The previous prime is 31306701961. The next prime is 31306701971. The reversal of 31306701969 is 96910760313.

The square root of 31306701969 is 176937.

It is a perfect power (a square), and thus also a powerful number.

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 31306701969 - 2³ = 31306701961 is a prime.

It is a super-2 number, since 2×31306701969² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31306701961) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 501322 + ... + 560300.

Almost surely, 2^31306701969 is an apocalyptic number.

31306701969 is the 176937-th square number.

31306701969 is the 88469-th centered octagonal number.

It is an amenable number.

31306701969 is a deficient number, since it is larger than the sum of its proper divisors (13914856504).

31306701969 is an frugal number, since it uses more digits than its factorization.

31306701969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117964 (or 58982 counting only the distinct ones).

The product of its (nonzero) digits is 183708, while the sum is 45.

The spelling of 31306701969 in words is "thirty-one billion, three hundred six million, seven hundred one thousand, nine hundred sixty-nine".