231646202142 has 16 divisors (see below), whose sum is σ = 475813821072. Its totient is φ = 75128497920.

The previous prime is 231646202071. The next prime is 231646202143. The reversal of 231646202142 is 241202646132.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231646202143) 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, 521725459 + ... + 521725902.

It is an arithmetic number, because the mean of its divisors is an integer number (29738363817).

Almost surely, 2^231646202142 is an apocalyptic number.

231646202142 is an abundant number, since it is smaller than the sum of its proper divisors (244167618930).

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

231646202142 is a wasteful number, since it uses less digits than its factorization.

231646202142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1043451403.

The product of its (nonzero) digits is 27648, while the sum is 33.

Adding to 231646202142 its reverse (241202646132), we get a palindrome (472848848274).

The spelling of 231646202142 in words is "two hundred thirty-one billion, six hundred forty-six million, two hundred two thousand, one hundred forty-two".