31011243042123 has 24 divisors (see below), whose sum is σ = 44969098691088. Its totient is φ = 20593358241792.

The previous prime is 31011243042067. The next prime is 31011243042133. The reversal of 31011243042123 is 32124034211013.

31011243042123 is a `hidden beast` number, since 3 + 1 + 0 + 1 + 12 + 430 + 4 + 212 + 3 = 666.

It is not a de Polignac number, because 31011243042123 - 2¹⁶ = 31011242976587 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31011243042133) 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 23 ways as a sum of consecutive naturals, for example, 231054811 + ... + 231188987.

It is an arithmetic number, because the mean of its divisors is an integer number (1873712445462).

Almost surely, 2^{31011243042123} is an apocalyptic number.

31011243042123 is a deficient number, since it is larger than the sum of its proper divisors (13957855648965).

31011243042123 is a wasteful number, since it uses less digits than its factorization.

31011243042123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 234363 (or 234360 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

Adding to 31011243042123 its reverse (32124034211013), we get a palindrome (63135277253136).

The spelling of 31011243042123 in words is "thirty-one trillion, eleven billion, two hundred forty-three million, forty-two thousand, one hundred twenty-three".