231401427 has 8 divisors (see below), whose sum is σ = 312252864. Its totient is φ = 152408808.

The previous prime is 231401407. The next prime is 231401431. The reversal of 231401427 is 724104132.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 231401427 - 2¹⁴ = 231385043 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 231401397 and 231401406.

It is not an unprimeable number, because it can be changed into a prime (231401407) 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, 464413 + ... + 464910.

It is an arithmetic number, because the mean of its divisors is an integer number (39031608).

Almost surely, 2^231401427 is an apocalyptic number.

231401427 is a deficient number, since it is larger than the sum of its proper divisors (80851437).

231401427 is an equidigital number, since it uses as much as digits as its factorization.

231401427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 929409.

The product of its (nonzero) digits is 1344, while the sum is 24.

The square root of 231401427 is about 15211.8844000341. The cubic root of 231401427 is about 613.9344600367.

Adding to 231401427 its reverse (724104132), we get a palindrome (955505559).

The spelling of 231401427 in words is "two hundred thirty-one million, four hundred one thousand, four hundred twenty-seven".