3131301240323 has 4 divisors (see below), whose sum is σ = 3132638833968. Its totient is φ = 3129963646680.

The previous prime is 3131301240271. The next prime is 3131301240343. The reversal of 3131301240323 is 3230421031313.

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

It is a cyclic number.

It is not a de Polignac number, because 3131301240323 - 2¹² = 3131301236227 is a prime.

It is a super-2 number, since 2×3131301240323² (a number of 26 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 = 3131301240292 and 3131301240301.

It is not an unprimeable number, because it can be changed into a prime (3131301240343) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 668793311 + ... + 668797992.

It is an arithmetic number, because the mean of its divisors is an integer number (783159708492).

Almost surely, 2^{3131301240323} is an apocalyptic number.

3131301240323 is a deficient number, since it is larger than the sum of its proper divisors (1337593645).

3131301240323 is a wasteful number, since it uses less digits than its factorization.

3131301240323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1337593644.

The product of its (nonzero) digits is 3888, while the sum is 26.

Adding to 3131301240323 its reverse (3230421031313), we get a palindrome (6361722271636).

The spelling of 3131301240323 in words is "three trillion, one hundred thirty-one billion, three hundred one million, two hundred forty thousand, three hundred twenty-three".