31313034231 has 8 divisors (see below), whose sum is σ = 41752782720. Its totient is φ = 20874320952.

The previous prime is 31313034191. The next prime is 31313034283. The reversal of 31313034231 is 13243031313.

It is a happy number.

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

It is not a de Polignac number, because 31313034231 - 2¹⁰ = 31313033207 is a prime.

It is a super-2 number, since 2×31313034231² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31313035231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 185235 + ... + 311348.

It is an arithmetic number, because the mean of its divisors is an integer number (5219097840).

Almost surely, 2^31313034231 is an apocalyptic number.

31313034231 is a deficient number, since it is larger than the sum of its proper divisors (10439748489).

31313034231 is a wasteful number, since it uses less digits than its factorization.

31313034231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 517605.

The product of its (nonzero) digits is 1944, while the sum is 24.

Adding to 31313034231 its reverse (13243031313), we get a palindrome (44556065544).

It can be divided in two parts, 313130 and 34231, that added together give a triangular number (347361 = T₈₃₃).

The spelling of 31313034231 in words is "thirty-one billion, three hundred thirteen million, thirty-four thousand, two hundred thirty-one".