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231363025 = 5276112161
BaseRepresentation
bin11011100101001…
…01000111010001
3121010100110101221
431302211013101
5433212104100
634542525041
75506360525
oct1562450721
9533313357
10231363025
11109664513
1265596781
1338c187ca
1422a27d85
15154a201a
hexdca51d1

231363025 has 12 divisors (see below), whose sum is σ = 287290764. Its totient is φ = 184832000.

The previous prime is 231362987. The next prime is 231363031. The reversal of 231363025 is 520363132.

It is a happy number.

231363025 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 6 ways, for example, as 84492864 + 146870161 = 9192^2 + 12119^2 .

It is not a de Polignac number, because 231363025 - 27 = 231362897 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12945 + ... + 25105.

It is an arithmetic number, because the mean of its divisors is an integer number (23940897).

Almost surely, 2231363025 is an apocalyptic number.

231363025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

231363025 is a deficient number, since it is larger than the sum of its proper divisors (55927739).

231363025 is a wasteful number, since it uses less digits than its factorization.

231363025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12932 (or 12927 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 25.

The square root of 231363025 is about 15210.6221108803. The cubic root of 231363025 is about 613.9004965247.

The spelling of 231363025 in words is "two hundred thirty-one million, three hundred sixty-three thousand, twenty-five".

Divisors: 1 5 25 761 3805 12161 19025 60805 304025 9254521 46272605 231363025