2131235542 has 32 divisors (see below), whose sum is σ = 3296075328. Its totient is φ = 1033200000.

The previous prime is 2131235527. The next prime is 2131235551. The reversal of 2131235542 is 2455321312.

It is a self number, because there is not a number n which added to its sum of digits gives 2131235542.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2595492 + ... + 2596312.

It is an arithmetic number, because the mean of its divisors is an integer number (103002354).

Almost surely, 2^2131235542 is an apocalyptic number.

2131235542 is a deficient number, since it is larger than the sum of its proper divisors (1164839786).

2131235542 is a wasteful number, since it uses less digits than its factorization.

2131235542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1176.

The product of its digits is 7200, while the sum is 28.

The square root of 2131235542 is about 46165.3066923637. The cubic root of 2131235542 is about 1286.8970837429.

Adding to 2131235542 its reverse (2455321312), we get a palindrome (4586556854).

The spelling of 2131235542 in words is "two billion, one hundred thirty-one million, two hundred thirty-five thousand, five hundred forty-two".