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31130055354 = 23193114959119
BaseRepresentation
bin11100111111011111…
…101111001010111010
32222100111200122220010
4130333133233022322
51002223243232404
622145001042350
72151301050606
oct347737571272
988314618803
1031130055354
1112225117382
1260494863b6
132c21539cc8
14171456c506
15c22e4a189
hex73f7ef2ba

31130055354 has 64 divisors (see below), whose sum is σ = 68106240000. Its totient is φ = 9449421120.

The previous prime is 31130055343. The next prime is 31130055391. The reversal of 31130055354 is 45355003113.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 497007 + ... + 556125.

It is an arithmetic number, because the mean of its divisors is an integer number (1064160000).

Almost surely, 231130055354 is an apocalyptic number.

31130055354 is an abundant number, since it is smaller than the sum of its proper divisors (36976184646).

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

31130055354 is a wasteful number, since it uses less digits than its factorization.

31130055354 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59323.

The product of its (nonzero) digits is 13500, while the sum is 30.

Adding to 31130055354 its reverse (45355003113), we get a palindrome (76485058467).

The spelling of 31130055354 in words is "thirty-one billion, one hundred thirty million, fifty-five thousand, three hundred fifty-four".

Divisors: 1 2 3 6 19 31 38 57 62 93 114 149 186 298 447 589 894 1178 1767 2831 3534 4619 5662 8493 9238 13857 16986 27714 59119 87761 118238 175522 177357 263283 354714 526566 1123261 1832689 2246522 3369783 3665378 5498067 6739566 8808731 10996134 17617462 26426193 34821091 52852386 69642182 104463273 167365889 208926546 273070661 334731778 502097667 546141322 819211983 1004195334 1638423966 5188342559 10376685118 15565027677 31130055354