21434692631 has 16 divisors (see below), whose sum is σ = 23515270656. Its totient is φ = 19376280000.

The previous prime is 21434692603. The next prime is 21434692633. The reversal of 21434692631 is 13629643412.

It is not a de Polignac number, because 21434692631 - 2⁶ = 21434692567 is a prime.

It is a super-2 number, since 2×21434692631² (a number of 21 digits) 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 (21434692633) 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, 3062546 + ... + 3069536.

It is an arithmetic number, because the mean of its divisors is an integer number (1469704416).

Almost surely, 2^21434692631 is an apocalyptic number.

21434692631 is a deficient number, since it is larger than the sum of its proper divisors (2080578025).

21434692631 is a wasteful number, since it uses less digits than its factorization.

21434692631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8534.

The product of its digits is 186624, while the sum is 41.

The spelling of 21434692631 in words is "twenty-one billion, four hundred thirty-four million, six hundred ninety-two thousand, six hundred thirty-one".