31123432124 has 6 divisors (see below), whose sum is σ = 54466006224. Its totient is φ = 15561716060.

The previous prime is 31123432103. The next prime is 31123432177. The reversal of 31123432124 is 42123432113.

It is a junction number, because it is equal to n+sod(n) for n = 31123432093 and 31123432102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3890429012 + ... + 3890429019.

It is an arithmetic number, because the mean of its divisors is an integer number (9077667704).

Almost surely, 2^31123432124 is an apocalyptic number.

It is an amenable number.

31123432124 is a deficient number, since it is larger than the sum of its proper divisors (23342574100).

31123432124 is a wasteful number, since it uses less digits than its factorization.

31123432124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7780858035 (or 7780858033 counting only the distinct ones).

The product of its digits is 3456, while the sum is 26.

Adding to 31123432124 its reverse (42123432113), we get a palindrome (73246864237).

The spelling of 31123432124 in words is "thirty-one billion, one hundred twenty-three million, four hundred thirty-two thousand, one hundred twenty-four".