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30831451834 = 2371392997419
BaseRepresentation
bin11100101101101100…
…101001111010111010
32221120200211000212111
4130231230221322322
51001120322424314
622055213002534
72141014005451
oct345554517272
987520730774
1030831451834
1112091607107
125b8548344a
132ba470aa31
1416c6a3db98
15c06b14ec4
hex72db29eba

30831451834 has 16 divisors (see below), whose sum is σ = 47838823200. Its totient is φ = 14891172624.

The previous prime is 30831451831. The next prime is 30831451883. The reversal of 30831451834 is 43815413803.

It is not an unprimeable number, because it can be changed into a prime (30831451831) 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, 1488424 + ... + 1508995.

It is an arithmetic number, because the mean of its divisors is an integer number (2989926450).

Almost surely, 230831451834 is an apocalyptic number.

30831451834 is a deficient number, since it is larger than the sum of its proper divisors (17007371366).

30831451834 is a wasteful number, since it uses less digits than its factorization.

30831451834 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2997597.

The product of its (nonzero) digits is 138240, while the sum is 40.

The spelling of 30831451834 in words is "thirty billion, eight hundred thirty-one million, four hundred fifty-one thousand, eight hundred thirty-four".

Divisors: 1 2 37 74 139 278 5143 10286 2997419 5994838 110904503 221809006 416641241 833282482 15415725917 30831451834