31352727081 has 16 divisors (see below), whose sum is σ = 46976662656. Its totient is φ = 18455116416.

The previous prime is 31352727067. The next prime is 31352727121. The reversal of 31352727081 is 18072725313.

It is not a de Polignac number, because 31352727081 - 2¹⁵ = 31352694313 is a prime.

It is a super-2 number, since 2×31352727081² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (31352727031) 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, 17475540 + ... + 17477333.

It is an arithmetic number, because the mean of its divisors is an integer number (2936041416).

Almost surely, 2^31352727081 is an apocalyptic number.

It is an amenable number.

31352727081 is a deficient number, since it is larger than the sum of its proper divisors (15623935575).

31352727081 is a wasteful number, since it uses less digits than its factorization.

31352727081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34952912.

The product of its (nonzero) digits is 70560, while the sum is 39.

The spelling of 31352727081 in words is "thirty-one billion, three hundred fifty-two million, seven hundred twenty-seven thousand, eighty-one".