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131421030 = 23513336977
BaseRepresentation
bin1111101010101…
…01001101100110
3100011021212202120
413311111031212
5232120433110
621012450410
73154026456
oct765251546
9304255676
10131421030
1168202624
1238019a06
13212c5530
141364dd66
15b80e870
hex7d55366

131421030 has 32 divisors (see below), whose sum is σ = 339673824. Its totient is φ = 32349696.

The previous prime is 131421013. The next prime is 131421053. The reversal of 131421030 is 30124131.

131421030 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (15).

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, 168099 + ... + 168878.

It is an arithmetic number, because the mean of its divisors is an integer number (10614807).

Almost surely, 2131421030 is an apocalyptic number.

131421030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

131421030 is an abundant number, since it is smaller than the sum of its proper divisors (208252794).

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

131421030 is a wasteful number, since it uses less digits than its factorization.

131421030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 337000.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 131421030 is about 11463.9011684505. The cubic root of 131421030 is about 508.4188245237.

Adding to 131421030 its reverse (30124131), we get a palindrome (161545161).

The spelling of 131421030 in words is "one hundred thirty-one million, four hundred twenty-one thousand, thirty".

Divisors: 1 2 3 5 6 10 13 15 26 30 39 65 78 130 195 390 336977 673954 1010931 1684885 2021862 3369770 4380701 5054655 8761402 10109310 13142103 21903505 26284206 43807010 65710515 131421030