2140421231 has 16 divisors (see below), whose sum is σ = 2428053600. Its totient is φ = 1870501248.

The previous prime is 2140421203. The next prime is 2140421237. The reversal of 2140421231 is 1321240412.

It is a cyclic number.

It is not a de Polignac number, because 2140421231 - 2³⁰ = 1066679407 is a prime.

It is a super-2 number, since 2×2140421231² = 9162806092231110722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2140421237) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 629885 + ... + 633273.

It is an arithmetic number, because the mean of its divisors is an integer number (151753350).

Almost surely, 2^2140421231 is an apocalyptic number.

2140421231 is a deficient number, since it is larger than the sum of its proper divisors (287632369).

2140421231 is a wasteful number, since it uses less digits than its factorization.

2140421231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5978.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 2140421231 is about 46264.6866519163. The cubic root of 2140421231 is about 1288.7432888659.

Adding to 2140421231 its reverse (1321240412), we get a palindrome (3461661643).

The spelling of 2140421231 in words is "two billion, one hundred forty million, four hundred twenty-one thousand, two hundred thirty-one".