231442101 has 24 divisors (see below), whose sum is σ = 366578784. Its totient is φ = 139544160.

The previous prime is 231442093. The next prime is 231442109. The reversal of 231442101 is 101244132.

It is an interprime number because it is at equal distance from previous prime (231442093) and next prime (231442109).

It is not a de Polignac number, because 231442101 - 2³ = 231442093 is a prime.

It is a super-2 number, since 2×231442101² = 107130892230588402, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231442109) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13570 + ... + 25436.

It is an arithmetic number, because the mean of its divisors is an integer number (15274116).

Almost surely, 2^231442101 is an apocalyptic number.

It is an amenable number.

231442101 is a deficient number, since it is larger than the sum of its proper divisors (135136683).

231442101 is a wasteful number, since it uses less digits than its factorization.

231442101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12081 (or 12078 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 231442101 is about 15213.2212565255. The cubic root of 231442101 is about 613.9704288545.

Adding to 231442101 its reverse (101244132), we get a palindrome (332686233).

The spelling of 231442101 in words is "two hundred thirty-one million, four hundred forty-two thousand, one hundred one".