231335505297 has 24 divisors (see below), whose sum is σ = 360067344000. Its totient is φ = 142276398048.

The previous prime is 231335505287. The next prime is 231335505307. The reversal of 231335505297 is 792505533132.

231335505297 is a `hidden beast` number, since 2 + 3 + 1 + 3 + 3 + 550 + 5 + 2 + 97 = 666.

It is an interprime number because it is at equal distance from previous prime (231335505287) and next prime (231335505307).

It is not a de Polignac number, because 231335505297 - 2¹¹ = 231335503249 is a prime.

It is a super-2 number, since 2×231335505297² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (231335505287) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 383097 + ... + 780662.

It is an arithmetic number, because the mean of its divisors is an integer number (15002806000).

Almost surely, 2^231335505297 is an apocalyptic number.

It is an amenable number.

231335505297 is a deficient number, since it is larger than the sum of its proper divisors (128731838703).

231335505297 is a wasteful number, since it uses less digits than its factorization.

231335505297 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1165477 (or 1165474 counting only the distinct ones).

The product of its (nonzero) digits is 850500, while the sum is 45.

The spelling of 231335505297 in words is "two hundred thirty-one billion, three hundred thirty-five million, five hundred five thousand, two hundred ninety-seven".