31431262088 has 36 divisors (see below), whose sum is σ = 62217496215. Its totient is φ = 14883979536.

The previous prime is 31431262081. The next prime is 31431262133. The reversal of 31431262088 is 88026213413.

It is a happy number.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in only one way, i.e., 15715631044 + 15715631044 = 125362^2 + 125362^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=125362.

It is a super-2 number, since 2×31431262088² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31431262081) 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, 9525863 + ... + 9529161.

Almost surely, 2^31431262088 is an apocalyptic number.

31431262088 is a gapful number since it is divisible by the number (38) formed by its first and last digit.

It is an amenable number.

31431262088 is a deficient number, since it is larger than the sum of its proper divisors (30786234127).

31431262088 is an frugal number, since it uses more digits than its factorization.

31431262088 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6642 (or 3320 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 38.

The spelling of 31431262088 in words is "thirty-one billion, four hundred thirty-one million, two hundred sixty-two thousand, eighty-eight".