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319472031 = 3449237173
BaseRepresentation
bin10011000010101…
…100000110011111
3211021010212020110
4103002230012133
51123241101111
651411221103
710626316224
oct2302540637
9737125213
10319472031
1115437407a
128aba7793
1351257b08
143060194b
151d0a85a6
hex130ac19f

319472031 has 8 divisors (see below), whose sum is σ = 426913200. Its totient is φ = 212506112.

The previous prime is 319471981. The next prime is 319472039. The reversal of 319472031 is 130274913.

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

It is a cyclic number.

It is not a de Polignac number, because 319472031 - 26 = 319471967 is a prime.

It is a super-2 number, since 2×3194720312 = 204124757182529922, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 319472031.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (319472039) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 117240 + ... + 119933.

It is an arithmetic number, because the mean of its divisors is an integer number (53364150).

Almost surely, 2319472031 is an apocalyptic number.

319472031 is a deficient number, since it is larger than the sum of its proper divisors (107441169).

319472031 is a wasteful number, since it uses less digits than its factorization.

319472031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 237625.

The product of its (nonzero) digits is 4536, while the sum is 30.

The square root of 319472031 is about 17873.7805458163. The cubic root of 319472031 is about 683.6139989770.

The spelling of 319472031 in words is "three hundred nineteen million, four hundred seventy-two thousand, thirty-one".

Divisors: 1 3 449 1347 237173 711519 106490677 319472031