2131240004 has 24 divisors (see below), whose sum is σ = 3822674688. Its totient is φ = 1039209920.

The previous prime is 2131239973. The next prime is 2131240009. The reversal of 2131240004 is 4000421312.

It is not an unprimeable number, because it can be changed into a prime (2131240009) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32657 + ... + 72999.

It is an arithmetic number, because the mean of its divisors is an integer number (159278112).

Almost surely, 2^2131240004 is an apocalyptic number.

It is an amenable number.

2131240004 is a deficient number, since it is larger than the sum of its proper divisors (1691434684).

2131240004 is a wasteful number, since it uses less digits than its factorization.

2131240004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40675 (or 40673 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 2131240004 is about 46165.3550186717. The cubic root of 2131240004 is about 1286.8979818339.

Adding to 2131240004 its reverse (4000421312), we get a palindrome (6131661316).

It can be divided in two parts, 21312 and 40004, that added together give a palindrome (61316).

The spelling of 2131240004 in words is "two billion, one hundred thirty-one million, two hundred forty thousand, four".