21134231223031 has 8 divisors (see below), whose sum is σ = 22377461657184. Its totient is φ = 19891005273600.

The previous prime is 21134231222999. The next prime is 21134231223067. The reversal of 21134231223031 is 13032213243112.

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 21134231223031 - 2⁵ = 21134231222999 is a prime.

It is a super-2 number, since 2×21134231223031² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21134231223631) 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, 16440831 + ... + 17679631.

It is an arithmetic number, because the mean of its divisors is an integer number (2797182707148).

Almost surely, 2^{21134231223031} is an apocalyptic number.

21134231223031 is a deficient number, since it is larger than the sum of its proper divisors (1243230434153).

21134231223031 is a wasteful number, since it uses less digits than its factorization.

21134231223031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2242361.

The product of its (nonzero) digits is 5184, while the sum is 28.

Adding to 21134231223031 its reverse (13032213243112), we get a palindrome (34166444466143).

The spelling of 21134231223031 in words is "twenty-one trillion, one hundred thirty-four billion, two hundred thirty-one million, two hundred twenty-three thousand, thirty-one".