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231402541 is a prime number
BaseRepresentation
bin11011100101011…
…10110000101101
3121010102110121111
431302232300231
5433214340131
634543432021
75506613656
oct1562566055
9533373544
10231402541
11109691177
12655b5611
1338c307a6
1422a3852d
15154adab1
hexdcaec2d

231402541 has 2 divisors, whose sum is σ = 231402542. Its totient is φ = 231402540.

The previous prime is 231402533. The next prime is 231402547. The reversal of 231402541 is 145204132.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 213306025 + 18096516 = 14605^2 + 4254^2 .

It is a cyclic number.

It is not a de Polignac number, because 231402541 - 23 = 231402533 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (231402547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115701270 + 115701271.

It is an arithmetic number, because the mean of its divisors is an integer number (115701271).

Almost surely, 2231402541 is an apocalyptic number.

It is an amenable number.

231402541 is a deficient number, since it is larger than the sum of its proper divisors (1).

231402541 is an equidigital number, since it uses as much as digits as its factorization.

231402541 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 231402541 is about 15211.9210160979. The cubic root of 231402541 is about 613.9354452249.

Adding to 231402541 its reverse (145204132), we get a palindrome (376606673).

The spelling of 231402541 in words is "two hundred thirty-one million, four hundred two thousand, five hundred forty-one".