1375684231 has 2 divisors, whose sum is σ = 1375684232. Its totient is φ = 1375684230.

The previous prime is 1375684207. The next prime is 1375684243. The reversal of 1375684231 is 1324865731.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1375684231 - 2¹⁵ = 1375651463 is a prime.

It is a super-2 number, since 2×1375684231² = 3785014206844122722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1375687231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 687842115 + 687842116.

It is an arithmetic number, because the mean of its divisors is an integer number (687842116).

Almost surely, 2^1375684231 is an apocalyptic number.

1375684231 is a deficient number, since it is larger than the sum of its proper divisors (1).

1375684231 is an equidigital number, since it uses as much as digits as its factorization.

1375684231 is an evil number, because the sum of its binary digits is even.

The product of its digits is 120960, while the sum is 40.

The square root of 1375684231 is about 37090.2174568983. The cubic root of 1375684231 is about 1112.1744651365.

The spelling of 1375684231 in words is "one billion, three hundred seventy-five million, six hundred eighty-four thousand, two hundred thirty-one".