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97031 = 118821
BaseRepresentation
bin10111101100000111
311221002202
4113230013
511101111
62025115
7552614
oct275407
9157082
1097031
11669a0
124819b
133521c
142750b
151db3b
hex17b07

97031 has 4 divisors (see below), whose sum is σ = 105864. Its totient is φ = 88200.

The previous prime is 97021. The next prime is 97039. The reversal of 97031 is 13079.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-97031 is a prime.

It is a super-2 number, since 2×970312 = 18830029922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 96994 and 97012.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 97031.

It is not an unprimeable number, because it can be changed into a prime (97039) 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, 4400 + ... + 4421.

It is an arithmetic number, because the mean of its divisors is an integer number (26466).

297031 is an apocalyptic number.

97031 is a deficient number, since it is larger than the sum of its proper divisors (8833).

97031 is a wasteful number, since it uses less digits than its factorization.

97031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8832.

The product of its (nonzero) digits is 189, while the sum is 20.

The square root of 97031 is about 311.4979935730. The cubic root of 97031 is about 45.9519030993.

It can be divided in two parts, 970 and 31, that added together give a palindrome (1001).

The spelling of 97031 in words is "ninety-seven thousand, thirty-one".

Divisors: 1 11 8821 97031