31023123133311 has 16 divisors (see below), whose sum is σ = 45975167929600. Its totient is φ = 20675338609464.

The previous prime is 31023123133273. The next prime is 31023123133313. The reversal of 31023123133311 is 11333132132013.

31023123133311 is a `hidden beast` number, since 3 + 1 + 0 + 2 + 3 + 12 + 313 + 331 + 1 = 666.

It is not a de Polignac number, because 31023123133311 - 2²³ = 31023114744703 is a prime.

It is a super-2 number, since 2×31023123133311² (a number of 28 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31023123133313) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 187234531 + ... + 187400148.

It is an arithmetic number, because the mean of its divisors is an integer number (2873447995600).

Almost surely, 2^{31023123133311} is an apocalyptic number.

31023123133311 is a deficient number, since it is larger than the sum of its proper divisors (14952044796289).

31023123133311 is a wasteful number, since it uses less digits than its factorization.

31023123133311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 374637755 (or 374637749 counting only the distinct ones).

The product of its (nonzero) digits is 2916, while the sum is 27.

Adding to 31023123133311 its reverse (11333132132013), we get a palindrome (42356255265324).

The spelling of 31023123133311 in words is "thirty-one trillion, twenty-three billion, one hundred twenty-three million, one hundred thirty-three thousand, three hundred eleven".