21014131239 has 20 divisors (see below), whose sum is σ = 33238039824. Its totient is φ = 13185336384.

The previous prime is 21014131213. The next prime is 21014131331. The reversal of 21014131239 is 93213141012.

21014131239 is a `hidden beast` number, since 2 + 10 + 1 + 413 + 1 + 239 = 666.

It is not a de Polignac number, because 21014131239 - 2¹⁶ = 21014065703 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21014131739) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 7629027 + ... + 7631780.

Almost surely, 2^21014131239 is an apocalyptic number.

21014131239 is a deficient number, since it is larger than the sum of its proper divisors (12223908585).

21014131239 is a wasteful number, since it uses less digits than its factorization.

21014131239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15260836 (or 15260827 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The spelling of 21014131239 in words is "twenty-one billion, fourteen million, one hundred thirty-one thousand, two hundred thirty-nine".