31403417986 has 8 divisors (see below), whose sum is σ = 47136766860. Its totient is φ = 15691162368.

The previous prime is 31403417887. The next prime is 31403417989. The reversal of 31403417986 is 68971430413.

It can be written as a sum of positive squares in 2 ways, for example, as 30635850961 + 767567025 = 175031^2 + 27705^2 .

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

It is a super-2 number, since 2×31403417986² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (31403417989) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5269591 + ... + 5275546.

Almost surely, 2^31403417986 is an apocalyptic number.

31403417986 is a deficient number, since it is larger than the sum of its proper divisors (15733348874).

31403417986 is a wasteful number, since it uses less digits than its factorization.

31403417986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10546628.

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

The spelling of 31403417986 in words is "thirty-one billion, four hundred three million, four hundred seventeen thousand, nine hundred eighty-six".