Search a number
-
+
31302980686 = 237493417451
BaseRepresentation
bin11101001001110011…
…011001010001001110
32222210120002011212001
4131021303121101032
51003102030340221
622214055302514
72155500642235
oct351163312116
988716064761
1031302980686
111230379777a
12609737aa3a
132c4b3049a3
14172d503b1c
15c33207391
hex749cd944e

31302980686 has 8 divisors (see below), whose sum is σ = 46955835864. Its totient is φ = 15651035400.

The previous prime is 31302980669. The next prime is 31302980711. The reversal of 31302980686 is 68608920313.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 133740 + ... + 283711.

It is an arithmetic number, because the mean of its divisors is an integer number (5869479483).

Almost surely, 231302980686 is an apocalyptic number.

31302980686 is a deficient number, since it is larger than the sum of its proper divisors (15652855178).

31302980686 is a wasteful number, since it uses less digits than its factorization.

31302980686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 454946.

The product of its (nonzero) digits is 373248, while the sum is 46.

The spelling of 31302980686 in words is "thirty-one billion, three hundred two million, nine hundred eighty thousand, six hundred eighty-six".

Divisors: 1 2 37493 74986 417451 834902 15651490343 31302980686