Search a number
-
+
3131851914 = 232173991773
BaseRepresentation
bin1011101010101100…
…0100010010001010
322002021010120011100
42322223010102022
522403223230124
61234434242230
7140416205412
oct27253042212
98067116140
103131851914
111367937774
12734a26376
133abacac19
14219d29642
15134e3b1c9
hexbaac448a

3131851914 has 12 divisors (see below), whose sum is σ = 6785679186. Its totient is φ = 1043950632.

The previous prime is 3131851867. The next prime is 3131851963. The reversal of 3131851914 is 4191581313.

It is a happy number.

3131851914 is a `hidden beast` number, since 3 + 131 + 8 + 519 + 1 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 3043397889 + 88454025 = 55167^2 + 9405^2 .

It is a super-2 number, since 2×31318519142 = 19616992822450926792, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 86995869 + ... + 86995904.

Almost surely, 23131851914 is an apocalyptic number.

3131851914 is an abundant number, since it is smaller than the sum of its proper divisors (3653827272).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3131851914 is a wasteful number, since it uses less digits than its factorization.

3131851914 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173991781 (or 173991778 counting only the distinct ones).

The product of its digits is 12960, while the sum is 36.

The square root of 3131851914 is about 55962.9512624200. The cubic root of 3131851914 is about 1463.0766287227.

The spelling of 3131851914 in words is "three billion, one hundred thirty-one million, eight hundred fifty-one thousand, nine hundred fourteen".

Divisors: 1 2 3 6 9 18 173991773 347983546 521975319 1043950638 1565925957 3131851914