31302112231 has 6 divisors (see below), whose sum is σ = 33895186800. Its totient is φ = 28894257288.

The previous prime is 31302112211. The next prime is 31302112277. The reversal of 31302112231 is 13221120313.

It is not a de Polignac number, because 31302112231 - 2¹³ = 31302104039 is a prime.

It is a super-2 number, since 2×31302112231² (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 = 31302112199 and 31302112208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31302112211) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 92609631 + ... + 92609968.

It is an arithmetic number, because the mean of its divisors is an integer number (5649197800).

Almost surely, 2^31302112231 is an apocalyptic number.

31302112231 is a deficient number, since it is larger than the sum of its proper divisors (2593074569).

31302112231 is a wasteful number, since it uses less digits than its factorization.

31302112231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185219625 (or 185219612 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 31302112231 its reverse (13221120313), we get a palindrome (44523232544).

The spelling of 31302112231 in words is "thirty-one billion, three hundred two million, one hundred twelve thousand, two hundred thirty-one".