21342031000 has 32 divisors (see below), whose sum is σ = 49940354880. Its totient is φ = 8536812000.

The previous prime is 21342030973. The next prime is 21342031027. The reversal of 21342031000 is 13024312.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (21342030973) and next prime (21342031027).

It is a super-2 number, since 2×21342031000² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10670016 + ... + 10672015.

It is an arithmetic number, because the mean of its divisors is an integer number (1560636090).

Almost surely, 2^21342031000 is an apocalyptic number.

21342031000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21342031000 is an abundant number, since it is smaller than the sum of its proper divisors (28598323880).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21342031000 is a wasteful number, since it uses less digits than its factorization.

21342031000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21342052 (or 21342038 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 21342031000 its reverse (13024312), we get a palindrome (21355055312).

The spelling of 21342031000 in words is "twenty-one billion, three hundred forty-two million, thirty-one thousand".