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31623053 = 7111812269
BaseRepresentation
bin111100010100…
…0011110001101
32012111121200012
41320220132031
531043414203
63045443005
7532535330
oct170503615
965447605
1031623053
1116939960
12a710465
136722987
1442b2617
152b99bd8
hex1e2878d

31623053 has 16 divisors (see below), whose sum is σ = 39661440. Its totient is φ = 24494400.

The previous prime is 31623047. The next prime is 31623061. The reversal of 31623053 is 35032613.

It is a de Polignac number, because none of the positive numbers 2k-31623053 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31623023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12803 + ... + 15071.

It is an arithmetic number, because the mean of its divisors is an integer number (2478840).

Almost surely, 231623053 is an apocalyptic number.

It is an amenable number.

31623053 is a deficient number, since it is larger than the sum of its proper divisors (8038387).

31623053 is a wasteful number, since it uses less digits than its factorization.

31623053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2468.

The product of its (nonzero) digits is 1620, while the sum is 23.

The square root of 31623053 is about 5623.4378275215. The cubic root of 31623053 is about 316.2286873419.

Adding to 31623053 its reverse (35032613), we get a palindrome (66655666).

The spelling of 31623053 in words is "thirty-one million, six hundred twenty-three thousand, fifty-three".

Divisors: 1 7 11 77 181 1267 1991 2269 13937 15883 24959 174713 410689 2874823 4517579 31623053