Search a number
-
+
131030030 = 2543461661
BaseRepresentation
bin1111100111101…
…01110000001110
3100010120000102002
413303311300032
5232020430110
621000232302
73150510515
oct763656016
9303500362
10131030030
1167a6588a
1237a6b692
13211b9581
141358b67c
15b783aa5
hex7cf5c0e

131030030 has 32 divisors (see below), whose sum is σ = 242228448. Its totient is φ = 51004800.

The previous prime is 131029993. The next prime is 131030047. The reversal of 131030030 is 30030131.

It is a junction number, because it is equal to n+sod(n) for n = 131029993 and 131030020.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 197900 + ... + 198560.

It is an arithmetic number, because the mean of its divisors is an integer number (7569639).

Almost surely, 2131030030 is an apocalyptic number.

131030030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

131030030 is a deficient number, since it is larger than the sum of its proper divisors (111198418).

131030030 is a wasteful number, since it uses less digits than its factorization.

131030030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1172.

The product of its (nonzero) digits is 27, while the sum is 11.

The square root of 131030030 is about 11446.8349337273. The cubic root of 131030030 is about 507.9141127248.

Adding to 131030030 its reverse (30030131), we get a palindrome (161060161).

The spelling of 131030030 in words is "one hundred thirty-one million, thirty thousand, thirty".

Divisors: 1 2 5 10 43 86 215 430 461 661 922 1322 2305 3305 4610 6610 19823 28423 39646 56846 99115 142115 198230 284230 304721 609442 1523605 3047210 13103003 26206006 65515015 131030030