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3131013045 = 35972151899
BaseRepresentation
bin1011101010011111…
…0111011110110101
322002012112221110010
42322213313132311
522403014404140
61234404250433
7140406112626
oct27247673665
98065487403
103131013045
111367414496
127346a0a19
133ab896154
14219b8ba4d
15134d22880
hexba9f77b5

3131013045 has 16 divisors (see below), whose sum is σ = 5061268800. Its totient is φ = 1652657664.

The previous prime is 3131013013. The next prime is 3131013091. The reversal of 3131013045 is 5403101313.

It is not a de Polignac number, because 3131013045 - 25 = 3131013013 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1074495 + ... + 1077404.

It is an arithmetic number, because the mean of its divisors is an integer number (316329300).

Almost surely, 23131013045 is an apocalyptic number.

It is an amenable number.

3131013045 is a deficient number, since it is larger than the sum of its proper divisors (1930255755).

3131013045 is a wasteful number, since it uses less digits than its factorization.

3131013045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2152004.

The product of its (nonzero) digits is 540, while the sum is 21.

The square root of 3131013045 is about 55955.4559002069. The cubic root of 3131013045 is about 1462.9459883158.

Adding to 3131013045 its reverse (5403101313), we get a palindrome (8534114358).

The spelling of 3131013045 in words is "three billion, one hundred thirty-one million, thirteen thousand, forty-five".

Divisors: 1 3 5 15 97 291 485 1455 2151899 6455697 10759495 32278485 208734203 626202609 1043671015 3131013045