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512245502031 = 31378591450919
BaseRepresentation
bin1110111010001000011…
…01100001000001001111
31210222012021021200001210
413131010031201001033
531343034322031111
61031153342505503
752002630632424
oct7350415410117
91728167250053
10512245502031
1118827326040a
1283339b95293
13393c610b873
141ab156a9d4b
15d4d0bea0a6
hex774436104f

512245502031 has 16 divisors (see below), whose sum is σ = 688780742400. Its totient is φ = 338609439168.

The previous prime is 512245502009. The next prime is 512245502101. The reversal of 512245502031 is 130205542215.

It is not a de Polignac number, because 512245502031 - 210 = 512245501007 is a prime.

It is a super-2 number, since 2×5122455020312 (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 512245502031.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (512245522031) 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, 372411 + ... + 1078508.

It is an arithmetic number, because the mean of its divisors is an integer number (43048796400).

Almost surely, 2512245502031 is an apocalyptic number.

512245502031 is a deficient number, since it is larger than the sum of its proper divisors (176535240369).

512245502031 is a wasteful number, since it uses less digits than its factorization.

512245502031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1451918.

The product of its (nonzero) digits is 12000, while the sum is 30.

The spelling of 512245502031 in words is "five hundred twelve billion, two hundred forty-five million, five hundred two thousand, thirty-one".

Divisors: 1 3 137 411 859 2577 117683 353049 1450919 4352757 198775903 596327709 1246339421 3739018263 170748500677 512245502031