231648967 has 4 divisors (see below), whose sum is σ = 252707976. Its totient is φ = 210589960.

The previous prime is 231648961. The next prime is 231648979. The reversal of 231648967 is 769846132.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-231648967 is a prime.

It is a super-2 number, since 2×231648967² = 107322487824334178, 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 (231648961) 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, 10529488 + ... + 10529509.

It is an arithmetic number, because the mean of its divisors is an integer number (63176994).

Almost surely, 2^231648967 is an apocalyptic number.

231648967 is a deficient number, since it is larger than the sum of its proper divisors (21059009).

231648967 is a wasteful number, since it uses less digits than its factorization.

231648967 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21059008.

The product of its digits is 435456, while the sum is 46.

The square root of 231648967 is about 15220.0186267954. The cubic root of 231648967 is about 614.1532993349.

It can be divided in two parts, 23164 and 8967, that added together give a triangular number (32131 = T₂₅₃).

The spelling of 231648967 in words is "two hundred thirty-one million, six hundred forty-eight thousand, nine hundred sixty-seven".