Search a number
-
+
131023974 = 2361357989
BaseRepresentation
bin1111100111101…
…00010001100110
3100010112201002210
413303310101212
5232020231344
621000144250
73150454044
oct763642146
9303481083
10131023974
1167a61284
1237a68086
13211b68a3
1413589394
15b781db9
hex7cf4466

131023974 has 16 divisors (see below), whose sum is σ = 266344560. Its totient is φ = 42958560.

The previous prime is 131023969. The next prime is 131023979. The reversal of 131023974 is 479320131.

It is an interprime number because it is at equal distance from previous prime (131023969) and next prime (131023979).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131023979) 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, 178629 + ... + 179360.

It is an arithmetic number, because the mean of its divisors is an integer number (16646535).

Almost surely, 2131023974 is an apocalyptic number.

131023974 is an abundant number, since it is smaller than the sum of its proper divisors (135320586).

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

131023974 is a wasteful number, since it uses less digits than its factorization.

131023974 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 358055.

The product of its (nonzero) digits is 4536, while the sum is 30.

The square root of 131023974 is about 11446.5704034003. The cubic root of 131023974 is about 507.9062876096.

The spelling of 131023974 in words is "one hundred thirty-one million, twenty-three thousand, nine hundred seventy-four".

Divisors: 1 2 3 6 61 122 183 366 357989 715978 1073967 2147934 21837329 43674658 65511987 131023974