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30422031 = 323795581
BaseRepresentation
bin111010000001…
…1010000001111
32010020121011220
41310003100033
530242001111
63004014423
7516403653
oct164032017
963217156
1030422031
1116199582
12a231413
1363c2103
14407ca63
152a0de06
hex1d0340f

30422031 has 16 divisors (see below), whose sum is σ = 42869760. Its totient is φ = 19150560.

The previous prime is 30422003. The next prime is 30422039. The reversal of 30422031 is 13022403.

It is not a de Polignac number, because 30422031 - 26 = 30421967 is a prime.

It is a super-2 number, since 2×304220312 = 1850999940329922, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 30422031.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30422039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2661 + ... + 8241.

It is an arithmetic number, because the mean of its divisors is an integer number (2679360).

Almost surely, 230422031 is an apocalyptic number.

30422031 is a deficient number, since it is larger than the sum of its proper divisors (12447729).

30422031 is a wasteful number, since it uses less digits than its factorization.

30422031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5686.

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 30422031 is about 5515.6170099092. The cubic root of 30422031 is about 312.1735248568.

Adding to 30422031 its reverse (13022403), we get a palindrome (43444434).

The spelling of 30422031 in words is "thirty million, four hundred twenty-two thousand, thirty-one".

Divisors: 1 3 23 69 79 237 1817 5451 5581 16743 128363 385089 440899 1322697 10140677 30422031