Search a number
-
+
131033442 = 2321838907
BaseRepresentation
bin1111100111101…
…10100101100010
3100010120012002110
413303312211202
5232021032232
621000300150
73150523461
oct763664542
9303505073
10131033442
1167a68401
1237a71656
13211baca7
141358c9d8
15b784acc
hex7cf6962

131033442 has 8 divisors (see below), whose sum is σ = 262066896. Its totient is φ = 43677812.

The previous prime is 131033401. The next prime is 131033459. The reversal of 131033442 is 244330131.

It is a sphenic number, since it is the product of 3 distinct primes.

131033442 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10919448 + ... + 10919459.

It is an arithmetic number, because the mean of its divisors is an integer number (32758362).

Almost surely, 2131033442 is an apocalyptic number.

131033442 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

131033442 is a wasteful number, since it uses less digits than its factorization.

131033442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21838912.

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 131033442 is about 11446.9839695878. The cubic root of 131033442 is about 507.9185213527.

Adding to 131033442 its reverse (244330131), we get a palindrome (375363573).

The spelling of 131033442 in words is "one hundred thirty-one million, thirty-three thousand, four hundred forty-two".

Divisors: 1 2 3 6 21838907 43677814 65516721 131033442