1375712231 has 4 divisors (see below), whose sum is σ = 1404982752. Its totient is φ = 1346441712.

The previous prime is 1375712183. The next prime is 1375712251. The reversal of 1375712231 is 1322175731.

It is a semiprime because it is the product of two primes.

It is a de Polignac number, because none of the positive numbers 2^k-1375712231 is a prime.

It is a super-2 number, since 2×1375712231² = 3785168285045994722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1375712251) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14635190 + ... + 14635283.

It is an arithmetic number, because the mean of its divisors is an integer number (351245688).

Almost surely, 2^1375712231 is an apocalyptic number.

1375712231 is a deficient number, since it is larger than the sum of its proper divisors (29270521).

1375712231 is an equidigital number, since it uses as much as digits as its factorization.

1375712231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29270520.

The product of its digits is 8820, while the sum is 32.

The square root of 1375712231 is about 37090.5949129965. The cubic root of 1375712231 is about 1112.1820106359.

Adding to 1375712231 its reverse (1322175731), we get a palindrome (2697887962).

The spelling of 1375712231 in words is "one billion, three hundred seventy-five million, seven hundred twelve thousand, two hundred thirty-one".