231040201340 has 24 divisors (see below), whose sum is σ = 522506302080. Its totient is φ = 85307151168.

The previous prime is 231040201321. The next prime is 231040201429. The reversal of 231040201340 is 43102040132.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 444307820 + ... + 444308339.

It is an arithmetic number, because the mean of its divisors is an integer number (21771095920).

Almost surely, 2^231040201340 is an apocalyptic number.

231040201340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231040201340 is an abundant number, since it is smaller than the sum of its proper divisors (291466100740).

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

231040201340 is a wasteful number, since it uses less digits than its factorization.

231040201340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 888616181 (or 888616179 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 231040201340 its reverse (43102040132), we get a palindrome (274142241472).

The spelling of 231040201340 in words is "two hundred thirty-one billion, forty million, two hundred one thousand, three hundred forty".