20120331124 has 24 divisors (see below), whose sum is σ = 37510331040. Its totient is φ = 9415852704.

The previous prime is 20120331043. The next prime is 20120331137. The reversal of 20120331124 is 42113302102.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a congruent number.

It is an unprimeable number.

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, 1588519 + ... + 1601134.

It is an arithmetic number, because the mean of its divisors is an integer number (1562930460).

Almost surely, 2^20120331124 is an apocalyptic number.

It is an amenable number.

20120331124 is a deficient number, since it is larger than the sum of its proper divisors (17389999916).

20120331124 is a wasteful number, since it uses less digits than its factorization.

20120331124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3189759 (or 3189757 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 20120331124 its reverse (42113302102), we get a palindrome (62233633226).

The spelling of 20120331124 in words is "twenty billion, one hundred twenty million, three hundred thirty-one thousand, one hundred twenty-four".