31483421998081 has 9 divisors (see below), whose sum is σ = 31694155206273. Its totient is φ = 31274080863300.

The previous prime is 31483421998057. The next prime is 31483421998099. The reversal of 31483421998081 is 18089912438413.

The square root of 31483421998081 is 5611009.

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

It is not a de Polignac number, because 31483421998081 - 2²⁷ = 31483287780353 is a prime.

It is a super-2 number, since 2×31483421998081² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31483421998381) 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, 847243780 + ... + 847280938.

It is an arithmetic number, because the mean of its divisors is an integer number (3521572800697).

Almost surely, 2^{31483421998081} is an apocalyptic number.

31483421998081 is the 5611009-th square number.

31483421998081 is the 2805505-th centered octagonal number.

It is an amenable number.

31483421998081 is a deficient number, since it is larger than the sum of its proper divisors (210733208192).

31483421998081 is an frugal number, since it uses more digits than its factorization.

31483421998081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74620 (or 37310 counting only the distinct ones).

The product of its (nonzero) digits is 11943936, while the sum is 61.

The spelling of 31483421998081 in words is "thirty-one trillion, four hundred eighty-three billion, four hundred twenty-one million, nine hundred ninety-eight thousand, eighty-one".