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152031701 = 1109137089
BaseRepresentation
bin10010000111111…
…01000111010101
3101121002000021202
421003331013111
5302410003301
623030322245
73524151053
oct1103750725
9347060252
10152031701
11788aa738
1242ab9385
13256608b3
14162971d3
15d53166b
hex90fd1d5

152031701 has 4 divisors (see below), whose sum is σ = 152169900. Its totient is φ = 151893504.

The previous prime is 152031653. The next prime is 152031709. The reversal of 152031701 is 107130251.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7431076 + 144600625 = 2726^2 + 12025^2 .

It is a cyclic number.

It is not a de Polignac number, because 152031701 - 26 = 152031637 is a prime.

It is a super-2 number, since 2×1520317012 = 46227276217906802, 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 (152031709) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67436 + ... + 69653.

It is an arithmetic number, because the mean of its divisors is an integer number (38042475).

Almost surely, 2152031701 is an apocalyptic number.

It is an amenable number.

152031701 is a deficient number, since it is larger than the sum of its proper divisors (138199).

152031701 is a wasteful number, since it uses less digits than its factorization.

152031701 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138198.

The product of its (nonzero) digits is 210, while the sum is 20.

The square root of 152031701 is about 12330.1135842295. The cubic root of 152031701 is about 533.7174284815.

Adding to 152031701 its reverse (107130251), we get a palindrome (259161952).

The spelling of 152031701 in words is "one hundred fifty-two million, thirty-one thousand, seven hundred one".

Divisors: 1 1109 137089 152031701