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BaseRepresentation
bin111011001000…
…0100111010010
32011100000102202
41312100213102
530414013132
63024243202
7524335022
oct166204722
964300382
1031001042
11165545a6
12a470502
136565817
14418da82
152ac5762
hex1d909d2

31001042 has 8 divisors (see below), whose sum is σ = 47758476. Its totient is φ = 15081552.

The previous prime is 31001039. The next prime is 31001057. The reversal of 31001042 is 24010013.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 21335161 + 9665881 = 4619^2 + 3109^2 .

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

It is a super-2 number, since 2×310010422 = 1922129210171528, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 209393 + ... + 209540.

Almost surely, 231001042 is an apocalyptic number.

31001042 is a deficient number, since it is larger than the sum of its proper divisors (16757434).

31001042 is a wasteful number, since it uses less digits than its factorization.

31001042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 418972.

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 31001042 is about 5567.8579364061. The cubic root of 31001042 is about 314.1415848972.

Adding to 31001042 its reverse (24010013), we get a palindrome (55011055).

The spelling of 31001042 in words is "thirty-one million, one thousand, forty-two".

Divisors: 1 2 37 74 418933 837866 15500521 31001042