2311231000 has 64 divisors (see below), whose sum is σ = 5824334880. Its totient is φ = 853372800.

The previous prime is 2311230997. The next prime is 2311231033. The reversal of 2311231000 is 1321132.

It is a super-2 number, since 2×2311231000² = 10683577470722000000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 75894 + ... + 101893.

Almost surely, 2^2311231000 is an apocalyptic number.

2311231000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2311231000 is an abundant number, since it is smaller than the sum of its proper divisors (3513103880).

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

2311231000 is a wasteful number, since it uses less digits than its factorization.

2311231000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177821 (or 177807 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 2311231000 is about 48075.2639098320. The cubic root of 2311231000 is about 1322.1511831941.

Adding to 2311231000 its reverse (1321132), we get a palindrome (2312552132).

The spelling of 2311231000 in words is "two billion, three hundred eleven million, two hundred thirty-one thousand".