31415081493 has 16 divisors (see below), whose sum is σ = 42009105600. Its totient is φ = 20882292480.

The previous prime is 31415081491. The next prime is 31415081497. The reversal of 31415081493 is 39418051413.

It is not a de Polignac number, because 31415081493 - 2¹ = 31415081491 is a prime.

It is a super-2 number, since 2×31415081493² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31415081491) 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, 2010013 + ... + 2025581.

It is an arithmetic number, because the mean of its divisors is an integer number (2625569100).

Almost surely, 2^31415081493 is an apocalyptic number.

It is an amenable number.

31415081493 is a deficient number, since it is larger than the sum of its proper divisors (10594024107).

31415081493 is a wasteful number, since it uses less digits than its factorization.

31415081493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17492.

The product of its (nonzero) digits is 51840, while the sum is 39.

The spelling of 31415081493 in words is "thirty-one billion, four hundred fifteen million, eighty-one thousand, four hundred ninety-three".