231541007 has 2 divisors, whose sum is σ = 231541008. Its totient is φ = 231541006.

The previous prime is 231540997. The next prime is 231541027. The reversal of 231541007 is 700145132.

231541007 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-231541007 is a prime.

It is a super-2 number, since 2×231541007² = 107222475845148098, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (231541027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115770503 + 115770504.

It is an arithmetic number, because the mean of its divisors is an integer number (115770504).

Almost surely, 2^231541007 is an apocalyptic number.

231541007 is a deficient number, since it is larger than the sum of its proper divisors (1).

231541007 is an equidigital number, since it uses as much as digits as its factorization.

231541007 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 840, while the sum is 23.

The square root of 231541007 is about 15216.4715686653. The cubic root of 231541007 is about 614.0578757952.

Adding to 231541007 its reverse (700145132), we get a palindrome (931686139).

The spelling of 231541007 in words is "two hundred thirty-one million, five hundred forty-one thousand, seven".