21014497031 has 8 divisors (see below), whose sum is σ = 23664419328. Its totient is φ = 18487827000.

The previous prime is 21014496973. The next prime is 21014497037. The reversal of 21014497031 is 13079441012.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21014497031 - 2¹⁴ = 21014480647 is a prime.

It is a super-2 number, since 2×21014497031² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21014497037) 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, 30812705 + ... + 30813386.

It is an arithmetic number, because the mean of its divisors is an integer number (2958052416).

Almost surely, 2^21014497031 is an apocalyptic number.

21014497031 is a deficient number, since it is larger than the sum of its proper divisors (2649922297).

21014497031 is a wasteful number, since it uses less digits than its factorization.

21014497031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61626133.

The product of its (nonzero) digits is 6048, while the sum is 32.

The spelling of 21014497031 in words is "twenty-one billion, fourteen million, four hundred ninety-seven thousand, thirty-one".