231101340 has 24 divisors (see below), whose sum is σ = 647083920. Its totient is φ = 61627008.

The previous prime is 231101329. The next prime is 231101341. The reversal of 231101340 is 43101132.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231101341) 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, 1925785 + ... + 1925904.

It is an arithmetic number, because the mean of its divisors is an integer number (26961830).

Almost surely, 2^231101340 is an apocalyptic number.

231101340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231101340 is an abundant number, since it is smaller than the sum of its proper divisors (415982580).

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

231101340 is a wasteful number, since it uses less digits than its factorization.

231101340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3851701 (or 3851699 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 231101340 is about 15202.0176292491. The cubic root of 231101340 is about 613.6689568521.

Adding to 231101340 its reverse (43101132), we get a palindrome (274202472).

The spelling of 231101340 in words is "two hundred thirty-one million, one hundred one thousand, three hundred forty".