31123023141 has 8 divisors (see below), whose sum is σ = 47425559104. Its totient is φ = 17784584640.

The previous prime is 31123023101. The next prime is 31123023157. The reversal of 31123023141 is 14132032113.

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

It is not a de Polignac number, because 31123023141 - 2⁶ = 31123023077 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 1482048721 = 31123023141 / (3 + 1 + 1 + 2 + 3 + 0 + 2 + 3 + 1 + 4 + 1).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31123023101) 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 7 ways as a sum of consecutive naturals, for example, 741024340 + ... + 741024381.

It is an arithmetic number, because the mean of its divisors is an integer number (5928194888).

Almost surely, 2^31123023141 is an apocalyptic number.

It is an amenable number.

31123023141 is a deficient number, since it is larger than the sum of its proper divisors (16302535963).

31123023141 is a wasteful number, since it uses less digits than its factorization.

31123023141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1482048731.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 31123023141 its reverse (14132032113), we get a palindrome (45255055254).

The spelling of 31123023141 in words is "thirty-one billion, one hundred twenty-three million, twenty-three thousand, one hundred forty-one".