1231023101 has 8 divisors (see below), whose sum is σ = 1534782144. Its totient is φ = 959238720.

The previous prime is 1231023067. The next prime is 1231023133. The reversal of 1231023101 is 1013201321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1231023101 - 2²⁶ = 1163914237 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1231023161) 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, 7993580 + ... + 7993733.

It is an arithmetic number, because the mean of its divisors is an integer number (191847768).

Almost surely, 2^1231023101 is an apocalyptic number.

1231023101 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1231023101 is a deficient number, since it is larger than the sum of its proper divisors (303759043).

1231023101 is a wasteful number, since it uses less digits than its factorization.

1231023101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15987331.

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

The square root of 1231023101 is about 35085.9387931975. The cubic root of 1231023101 is about 1071.7382585366.

Adding to 1231023101 its reverse (1013201321), we get a palindrome (2244224422).

The spelling of 1231023101 in words is "one billion, two hundred thirty-one million, twenty-three thousand, one hundred one".