23010021311 has 4 divisors (see below), whose sum is σ = 23035391592. Its totient is φ = 22984651032.

The previous prime is 23010021263. The next prime is 23010021323. The reversal of 23010021311 is 11312001032.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23010021311 is a prime.

It is a super-2 number, since 2×23010021311² (a number of 22 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 (23010021361) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12683780 + ... + 12685593.

It is an arithmetic number, because the mean of its divisors is an integer number (5758847898).

Almost surely, 2^23010021311 is an apocalyptic number.

23010021311 is a deficient number, since it is larger than the sum of its proper divisors (25370281).

23010021311 is an equidigital number, since it uses as much as digits as its factorization.

23010021311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25370280.

The product of its (nonzero) digits is 36, while the sum is 14.

Adding to 23010021311 its reverse (11312001032), we get a palindrome (34322022343).

The spelling of 23010021311 in words is "twenty-three billion, ten million, twenty-one thousand, three hundred eleven".