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238953031 = 1992834243
BaseRepresentation
bin11100011111000…
…10001001000111
3121122122001221021
432033202021013
5442132444111
635413332011
75631032032
oct1617421107
9548561837
10238953031
11112978a49
1268037007
133a675435
1423a42019
1515ea0d71
hexe3e2247

238953031 has 8 divisors (see below), whose sum is σ = 241059200. Its totient is φ = 236856312.

The previous prime is 238953023. The next prime is 238953041. The reversal of 238953031 is 130359832.

238953031 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 238953031 - 23 = 238953023 is a prime.

It is a super-2 number, since 2×2389530312 = 114197102048173922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (238953041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54196 + ... + 58438.

It is an arithmetic number, because the mean of its divisors is an integer number (30132400).

Almost surely, 2238953031 is an apocalyptic number.

238953031 is a deficient number, since it is larger than the sum of its proper divisors (2106169).

238953031 is a wasteful number, since it uses less digits than its factorization.

238953031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4725.

The product of its (nonzero) digits is 19440, while the sum is 34.

The square root of 238953031 is about 15458.1056730765. The cubic root of 238953031 is about 620.5415239331.

The spelling of 238953031 in words is "two hundred thirty-eight million, nine hundred fifty-three thousand, thirty-one".

Divisors: 1 199 283 4243 56317 844357 1200769 238953031