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31093079 = 238831531
BaseRepresentation
bin111011010011…
…1000101010111
32011111200200112
41312213011113
530424434304
63030233235
7525200243
oct166470527
964450615
1031093079
1116607766
12a4b581b
136598694
1441b5423
152ae2b6e
hex1da7157

31093079 has 8 divisors (see below), whose sum is σ = 32502912. Its totient is φ = 29688120.

The previous prime is 31093043. The next prime is 31093091. The reversal of 31093079 is 97039013.

It is a happy number.

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 31093079 - 216 = 31027543 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 (31093009) 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, 19544 + ... + 21074.

It is an arithmetic number, because the mean of its divisors is an integer number (4062864).

Almost surely, 231093079 is an apocalyptic number.

31093079 is a deficient number, since it is larger than the sum of its proper divisors (1409833).

31093079 is a wasteful number, since it uses less digits than its factorization.

31093079 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2437.

The product of its (nonzero) digits is 5103, while the sum is 32.

The square root of 31093079 is about 5576.1168388046. The cubic root of 31093079 is about 314.4521560047.

The spelling of 31093079 in words is "thirty-one million, ninety-three thousand, seventy-nine".

Divisors: 1 23 883 1531 20309 35213 1351873 31093079