31481880530 has 8 divisors (see below), whose sum is σ = 56667384972. Its totient is φ = 12592752208.

The previous prime is 31481880449. The next prime is 31481880541. The reversal of 31481880530 is 3508818413.

It can be written as a sum of positive squares in 2 ways, for example, as 31077106369 + 404774161 = 176287^2 + 20119^2 .

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

It is a super-2 number, since 2×31481880530² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1574094017 + ... + 1574094036.

Almost surely, 2^31481880530 is an apocalyptic number.

31481880530 is a deficient number, since it is larger than the sum of its proper divisors (25185504442).

31481880530 is a wasteful number, since it uses less digits than its factorization.

31481880530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3148188060.

The product of its (nonzero) digits is 92160, while the sum is 41.

The spelling of 31481880530 in words is "thirty-one billion, four hundred eighty-one million, eight hundred eighty thousand, five hundred thirty".