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131215030 = 2513121503
BaseRepresentation
bin1111101001000…
…10111010110110
3100010220102011221
413310202322312
5232042340110
621004220554
73152211052
oct764427266
9303812157
10131215030
1168081881
1237b3a75a
132125283b
14135d8c62
15b7bd7da
hex7d22eb6

131215030 has 8 divisors (see below), whose sum is σ = 236187072. Its totient is φ = 52486008.

The previous prime is 131215013. The next prime is 131215037. The reversal of 131215030 is 30512131.

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

It is a junction number, because it is equal to n+sod(n) for n = 131214995 and 131215013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131215037) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6560742 + ... + 6560761.

It is an arithmetic number, because the mean of its divisors is an integer number (29523384).

Almost surely, 2131215030 is an apocalyptic number.

131215030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

131215030 is a deficient number, since it is larger than the sum of its proper divisors (104972042).

131215030 is a wasteful number, since it uses less digits than its factorization.

131215030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13121510.

The product of its (nonzero) digits is 90, while the sum is 16.

The square root of 131215030 is about 11454.9129197912. The cubic root of 131215030 is about 508.1530399468.

Adding to 131215030 its reverse (30512131), we get a palindrome (161727161).

The spelling of 131215030 in words is "one hundred thirty-one million, two hundred fifteen thousand, thirty".

Divisors: 1 2 5 10 13121503 26243006 65607515 131215030