231333001011 has 48 divisors (see below), whose sum is σ = 386490277888. Its totient is φ = 130604140800.

The previous prime is 231333000989. The next prime is 231333001037. The reversal of 231333001011 is 110100333132.

It is a happy number.

231333001011 is a `hidden beast` number, since 2 + 313 + 330 + 0 + 10 + 11 = 666.

It is not a de Polignac number, because 231333001011 - 2⁶ = 231333000947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231333001511) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1868256 + ... + 1988226.

Almost surely, 2^231333001011 is an apocalyptic number.

231333001011 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

231333001011 is a deficient number, since it is larger than the sum of its proper divisors (155157276877).

231333001011 is a wasteful number, since it uses less digits than its factorization.

231333001011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120352 (or 120349 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 18.

Adding to 231333001011 its reverse (110100333132), we get a palindrome (341433334143).

The spelling of 231333001011 in words is "two hundred thirty-one billion, three hundred thirty-three million, one thousand, eleven".