31167430849 has 9 divisors (see below), whose sum is σ = 31776130659. Its totient is φ = 30570185880.

The previous prime is 31167430837. The next prime is 31167430859. The reversal of 31167430849 is 94803476113.

The square root of 31167430849 is 176543.

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

It can be written as a sum of positive squares in only one way, i.e., 22468511025 + 8698919824 = 149895^2 + 93268^2 .

It is not a de Polignac number, because 31167430849 - 2²⁹ = 30630559937 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31167430799 and 31167430808.

It is not an unprimeable number, because it can be changed into a prime (31167430859) 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, 9355114 + ... + 9358444.

Almost surely, 2^31167430849 is an apocalyptic number.

31167430849 is the 176543-rd square number.

31167430849 is the 88272-nd centered octagonal number.

It is an amenable number.

31167430849 is a deficient number, since it is larger than the sum of its proper divisors (608699810).

31167430849 is an frugal number, since it uses more digits than its factorization.

31167430849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6768 (or 3384 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 46.

The spelling of 31167430849 in words is "thirty-one billion, one hundred sixty-seven million, four hundred thirty thousand, eight hundred forty-nine".