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3116431 = 23135497
BaseRepresentation
bin1011111000110110001111
312212022221101
423320312033
51244211211
6150443531
735326543
oct13706617
95768841
103116431
11183946a
1210635a7
13851656
145b1a23
154185c1
hex2f8d8f

3116431 has 4 divisors (see below), whose sum is σ = 3251952. Its totient is φ = 2980912.

The previous prime is 3116417. The next prime is 3116447. The reversal of 3116431 is 1346113.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 3116431 - 27 = 3116303 is a prime.

It is a super-2 number, since 2×31164312 = 19424284355522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3116399 and 3116408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3116131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67726 + ... + 67771.

It is an arithmetic number, because the mean of its divisors is an integer number (812988).

Almost surely, 23116431 is an apocalyptic number.

3116431 is the 1117-th centered pentagonal number.

3116431 is a deficient number, since it is larger than the sum of its proper divisors (135521).

3116431 is a wasteful number, since it uses less digits than its factorization.

3116431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135520.

The product of its digits is 216, while the sum is 19.

The square root of 3116431 is about 1765.3416100007. The cubic root of 3116431 is about 146.0671330721.

The spelling of 3116431 in words is "three million, one hundred sixteen thousand, four hundred thirty-one".

Divisors: 1 23 135497 3116431