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310389042 = 23131394897
BaseRepresentation
bin10010100000000…
…010100100110010
3210122001101201110
4102200002210302
51113424422132
650444414150
710456156215
oct2240024462
9718041643
10310389042
1114a22a977
1287b47356
134c3c7772
142d31977c
151c3b21cc
hex12802932

310389042 has 16 divisors (see below), whose sum is σ = 625518432. Its totient is φ = 102672960.

The previous prime is 310388989. The next prime is 310389049. The reversal of 310389042 is 240983013.

It is not an unprimeable number, because it can be changed into a prime (310389049) 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, 196663 + ... + 198234.

It is an arithmetic number, because the mean of its divisors is an integer number (39094902).

Almost surely, 2310389042 is an apocalyptic number.

310389042 is an abundant number, since it is smaller than the sum of its proper divisors (315129390).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

310389042 is a wasteful number, since it uses less digits than its factorization.

310389042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 395033.

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 310389042 is about 17617.8614479738. The cubic root of 310389042 is about 677.0729448299.

The spelling of 310389042 in words is "three hundred ten million, three hundred eighty-nine thousand, forty-two".

Divisors: 1 2 3 6 131 262 393 786 394897 789794 1184691 2369382 51731507 103463014 155194521 310389042