101012231231 has 4 divisors (see below), whose sum is σ = 101019184872. Its totient is φ = 101005277592.

The previous prime is 101012231219. The next prime is 101012231233. The reversal of 101012231231 is 132132210101.

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-101012231231 is a prime.

It is a super-2 number, since 2×101012231231² (a number of 23 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 (101012231233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3454985 + ... + 3484098.

It is an arithmetic number, because the mean of its divisors is an integer number (25254796218).

Almost surely, 2^101012231231 is an apocalyptic number.

101012231231 is a deficient number, since it is larger than the sum of its proper divisors (6953641).

101012231231 is an equidigital number, since it uses as much as digits as its factorization.

101012231231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6953640.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 101012231231 its reverse (132132210101), we get a palindrome (233144441332).

The spelling of 101012231231 in words is "one hundred one billion, twelve million, two hundred thirty-one thousand, two hundred thirty-one".