231155747007 has 8 divisors (see below), whose sum is σ = 308820403584. Its totient is φ = 153797460888.

The previous prime is 231155746979. The next prime is 231155747023. The reversal of 231155747007 is 700747551132.

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

It is not a de Polignac number, because 231155747007 - 2²³ = 231147358399 is a prime.

It is a super-3 number, since 3×231155747007³ (a number of 35 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 231155747007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231155747027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 76590853 + ... + 76593870.

It is an arithmetic number, because the mean of its divisors is an integer number (38602550448).

Almost surely, 2^231155747007 is an apocalyptic number.

231155747007 is a deficient number, since it is larger than the sum of its proper divisors (77664656577).

231155747007 is a wasteful number, since it uses less digits than its factorization.

231155747007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153185229.

The product of its (nonzero) digits is 205800, while the sum is 42.

The spelling of 231155747007 in words is "two hundred thirty-one billion, one hundred fifty-five million, seven hundred forty-seven thousand, seven".