Search a number
-
+
131078497 = 1183143569
BaseRepresentation
bin1111101000000…
…01100101100001
3100010122110220011
413310001211201
5232024002442
621001244521
73151102024
oct764014541
9303573804
10131078497
1167a99240
1237a93741
1321205654
14135a11bb
15b793117
hex7d01961

131078497 has 8 divisors (see below), whose sum is σ = 144718560. Its totient is φ = 117725760.

The previous prime is 131078417. The next prime is 131078513. The reversal of 131078497 is 794870131.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-131078497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131078407) 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, 70872 + ... + 72697.

It is an arithmetic number, because the mean of its divisors is an integer number (18089820).

Almost surely, 2131078497 is an apocalyptic number.

It is an amenable number.

131078497 is a deficient number, since it is larger than the sum of its proper divisors (13640063).

131078497 is a wasteful number, since it uses less digits than its factorization.

131078497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143663.

The product of its (nonzero) digits is 42336, while the sum is 40.

The square root of 131078497 is about 11448.9517860807. The cubic root of 131078497 is about 507.9767295125.

The spelling of 131078497 in words is "one hundred thirty-one million, seventy-eight thousand, four hundred ninety-seven".

Divisors: 1 11 83 913 143569 1579259 11916227 131078497