31300240231 has 4 divisors (see below), whose sum is σ = 33707951032. Its totient is φ = 28892529432.

The previous prime is 31300240219. The next prime is 31300240247. The reversal of 31300240231 is 13204200313.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 31300240231 - 2⁵ = 31300240199 is a prime.

It is a super-2 number, since 2×31300240231² (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 = 31300240199 and 31300240208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31300240831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1203855381 + ... + 1203855406.

It is an arithmetic number, because the mean of its divisors is an integer number (8426987758).

Almost surely, 2^31300240231 is an apocalyptic number.

31300240231 is a deficient number, since it is larger than the sum of its proper divisors (2407710801).

31300240231 is a wasteful number, since it uses less digits than its factorization.

31300240231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2407710800.

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 31300240231 its reverse (13204200313), we get a palindrome (44504440544).

The spelling of 31300240231 in words is "thirty-one billion, three hundred million, two hundred forty thousand, two hundred thirty-one".