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313131031130 = 25102130669053
BaseRepresentation
bin1001000111010000001…
…00000101101001011010
31002221020122021112010102
410203220010011221122
520112243020444010
6355503404415402
731423451564051
oct4435004055132
91087218245112
10313131031130
11110886338345
125082ab47562
13236b33ba508
1411227059398
15822a394ba5
hex48e8105a5a

313131031130 has 16 divisors (see below), whose sum is σ = 564187917384. Its totient is φ = 125129732160.

The previous prime is 313131031079. The next prime is 313131031133. The reversal of 313131031130 is 31130131313.

It can be written as a sum of positive squares in 4 ways, for example, as 177597344929 + 135533686201 = 421423^2 + 368149^2 .

It is not an unprimeable number, because it can be changed into a prime (313131031133) 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, 15324317 + ... + 15344736.

Almost surely, 2313131031130 is an apocalyptic number.

313131031130 is a deficient number, since it is larger than the sum of its proper divisors (251056886254).

313131031130 is a wasteful number, since it uses less digits than its factorization.

313131031130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30670081.

The product of its (nonzero) digits is 243, while the sum is 20.

Adding to 313131031130 its reverse (31130131313), we get a palindrome (344261162443).

The spelling of 313131031130 in words is "three hundred thirteen billion, one hundred thirty-one million, thirty-one thousand, one hundred thirty".

Divisors: 1 2 5 10 1021 2042 5105 10210 30669053 61338106 153345265 306690530 31313103113 62626206226 156565515565 313131031130