31123023143429 has 64 divisors (see below), whose sum is σ = 37823786880000. Its totient is φ = 25567543572480.

The previous prime is 31123023143423. The next prime is 31123023143447. The reversal of 31123023143429 is 92434132032113.

It is not a de Polignac number, because 31123023143429 - 2¹² = 31123023139333 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31123023143392 and 31123023143401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31123023143423) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 750311312 + ... + 750352790.

It is an arithmetic number, because the mean of its divisors is an integer number (590996670000).

Almost surely, 2^{31123023143429} is an apocalyptic number.

It is an amenable number.

31123023143429 is a deficient number, since it is larger than the sum of its proper divisors (6700763736571).

31123023143429 is a wasteful number, since it uses less digits than its factorization.

31123023143429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42083 (or 42069 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 38.

The spelling of 31123023143429 in words is "thirty-one trillion, one hundred twenty-three billion, twenty-three million, one hundred forty-three thousand, four hundred twenty-nine".