31301423231 has 8 divisors (see below), whose sum is σ = 33713455104. Its totient is φ = 28889995680.

The previous prime is 31301423203. The next prime is 31301423269. The reversal of 31301423231 is 13232410313.

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

It is a de Polignac number, because none of the positive numbers 2^k-31301423231 is a prime.

It is a super-2 number, since 2×31301423231² (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 = 31301423197 and 31301423206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31301423291) 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, 40496 + ... + 253461.

It is an arithmetic number, because the mean of its divisors is an integer number (4214181888).

Almost surely, 2^31301423231 is an apocalyptic number.

31301423231 is a deficient number, since it is larger than the sum of its proper divisors (2412031873).

31301423231 is a wasteful number, since it uses less digits than its factorization.

31301423231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 302161.

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 31301423231 its reverse (13232410313), we get a palindrome (44533833544).

The spelling of 31301423231 in words is "thirty-one billion, three hundred one million, four hundred twenty-three thousand, two hundred thirty-one".