Search a number
-
+
131074479 = 3231469801
BaseRepresentation
bin1111101000000…
…00100110101111
3100010122021101100
413310000212233
5232023340404
621001214143
73151054224
oct764004657
9303567340
10131074479
1167a96218
1237a91353
1321203883
141359d94b
15b791d39
hex7d009af

131074479 has 12 divisors (see below), whose sum is σ = 195437632. Its totient is φ = 84564000.

The previous prime is 131074477. The next prime is 131074481. The reversal of 131074479 is 974470131.

It is an interprime number because it is at equal distance from previous prime (131074477) and next prime (131074481).

It is not a de Polignac number, because 131074479 - 21 = 131074477 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131074477) 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, 234622 + ... + 235179.

Almost surely, 2131074479 is an apocalyptic number.

131074479 is a deficient number, since it is larger than the sum of its proper divisors (64363153).

131074479 is a wasteful number, since it uses less digits than its factorization.

131074479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 469838 (or 469835 counting only the distinct ones).

The product of its (nonzero) digits is 21168, while the sum is 36.

The square root of 131074479 is about 11448.7763101565. The cubic root of 131074479 is about 507.9715390569.

The spelling of 131074479 in words is "one hundred thirty-one million, seventy-four thousand, four hundred seventy-nine".

Divisors: 1 3 9 31 93 279 469801 1409403 4228209 14563831 43691493 131074479