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31050238501 = 192187145971
BaseRepresentation
bin11100111010101111…
…010000101000100101
32222010221111112202101
4130322233100220211
51002042330113001
622133030212101
72146311446452
oct347257205045
988127445671
1031050238501
1112194060837
1260267b4031
132c0ab420b9
141707b12829
15c1ae30a01
hex73abd0a25

31050238501 has 12 divisors (see below), whose sum is σ = 32788701504. Its totient is φ = 29399653800.

The previous prime is 31050238493. The next prime is 31050238517. The reversal of 31050238501 is 10583205013.

It is not a de Polignac number, because 31050238501 - 23 = 31050238493 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 31050238501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31050238561) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 652446 + ... + 698416.

It is an arithmetic number, because the mean of its divisors is an integer number (2732391792).

Almost surely, 231050238501 is an apocalyptic number.

It is an amenable number.

31050238501 is a deficient number, since it is larger than the sum of its proper divisors (1738463003).

31050238501 is a wasteful number, since it uses less digits than its factorization.

31050238501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47880 (or 47861 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 28.

The spelling of 31050238501 in words is "thirty-one billion, fifty million, two hundred thirty-eight thousand, five hundred one".

Divisors: 1 19 361 1871 35549 45971 675431 873449 16595531 86011741 1634223079 31050238501