31400115231 has 8 divisors (see below), whose sum is σ = 42998356144. Its totient is φ = 20367642240.

The previous prime is 31400115221. The next prime is 31400115281. The reversal of 31400115231 is 13251100413.

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

It is not a de Polignac number, because 31400115231 - 2¹⁷ = 31399984159 is a prime.

It is a super-2 number, since 2×31400115231² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31400115198 and 31400115207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31400115221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 141441850 + ... + 141442071.

It is an arithmetic number, because the mean of its divisors is an integer number (5374794518).

Almost surely, 2^31400115231 is an apocalyptic number.

31400115231 is a deficient number, since it is larger than the sum of its proper divisors (11598240913).

31400115231 is a wasteful number, since it uses less digits than its factorization.

31400115231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 282883961.

The product of its (nonzero) digits is 360, while the sum is 21.

Adding to 31400115231 its reverse (13251100413), we get a palindrome (44651215644).

The spelling of 31400115231 in words is "thirty-one billion, four hundred million, one hundred fifteen thousand, two hundred thirty-one".