31430670481 has 16 divisors (see below), whose sum is σ = 36009059328. Its totient is φ = 26874432000.

The previous prime is 31430670461. The next prime is 31430670487. The reversal of 31430670481 is 18407603413.

It is a cyclic number.

It is not a de Polignac number, because 31430670481 - 2⁵ = 31430670449 is a prime.

It is a super-2 number, since 2×31430670481² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 31430670481.

It is not an unprimeable number, because it can be changed into a prime (31430670487) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8096661 + ... + 8100541.

It is an arithmetic number, because the mean of its divisors is an integer number (2250566208).

Almost surely, 2^31430670481 is an apocalyptic number.

It is an amenable number.

31430670481 is a deficient number, since it is larger than the sum of its proper divisors (4578388847).

31430670481 is a wasteful number, since it uses less digits than its factorization.

31430670481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6432.

The product of its (nonzero) digits is 48384, while the sum is 37.

The spelling of 31430670481 in words is "thirty-one billion, four hundred thirty million, six hundred seventy thousand, four hundred eighty-one".