231401371 has 2 divisors, whose sum is σ = 231401372. Its totient is φ = 231401370.

The previous prime is 231401369. The next prime is 231401383. The reversal of 231401371 is 173104132.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 231401371 - 2¹ = 231401369 is a prime.

Together with 231401369, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (231401341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115700685 + 115700686.

It is an arithmetic number, because the mean of its divisors is an integer number (115700686).

Almost surely, 2^231401371 is an apocalyptic number.

231401371 is a deficient number, since it is larger than the sum of its proper divisors (1).

231401371 is an equidigital number, since it uses as much as digits as its factorization.

231401371 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 504, while the sum is 22.

The square root of 231401371 is about 15211.8825593679. The cubic root of 231401371 is about 613.9344105119.

The spelling of 231401371 in words is "two hundred thirty-one million, four hundred one thousand, three hundred seventy-one".