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152931213 = 336838293
BaseRepresentation
bin10010001110110…
…00101110001101
3101122202201012000
421013120232031
5303122244323
623101502513
73534615411
oct1107305615
9348681160
10152931213
1179364536
1243271a39
13258b7156
141644cd41
15d65ce43
hex91d8b8d

152931213 has 16 divisors (see below), whose sum is σ = 226923840. Its totient is φ = 101792592.

The previous prime is 152931211. The next prime is 152931227. The reversal of 152931213 is 312139251.

152931213 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 152931213 - 21 = 152931211 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (152931211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14295 + ... + 22587.

It is an arithmetic number, because the mean of its divisors is an integer number (14182740).

Almost surely, 2152931213 is an apocalyptic number.

It is an amenable number.

152931213 is a deficient number, since it is larger than the sum of its proper divisors (73992627).

152931213 is an equidigital number, since it uses as much as digits as its factorization.

152931213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8985 (or 8979 counting only the distinct ones).

The product of its digits is 1620, while the sum is 27.

The square root of 152931213 is about 12366.5360145839. The cubic root of 152931213 is about 534.7679583008.

The spelling of 152931213 in words is "one hundred fifty-two million, nine hundred thirty-one thousand, two hundred thirteen".

Divisors: 1 3 9 27 683 2049 6147 8293 18441 24879 74637 223911 5664119 16992357 50977071 152931213