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131202013 = 3167181349
BaseRepresentation
bin1111101000111…
…11101111011101
3100010212202022211
413310133233131
5232041431023
621004040421
73152125105
oct764375735
9303782284
10131202013
1168073018
1237b33111
1321249937
14135d4205
15b7b9a0d
hex7d1fbdd

131202013 has 16 divisors (see below), whose sum is σ = 138611200. Its totient is φ = 124027200.

The previous prime is 131202007. The next prime is 131202041. The reversal of 131202013 is 310202131.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-131202013 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 131201984 and 131202002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131202053) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 375763 + ... + 376111.

It is an arithmetic number, because the mean of its divisors is an integer number (8663200).

Almost surely, 2131202013 is an apocalyptic number.

It is an amenable number.

131202013 is a deficient number, since it is larger than the sum of its proper divisors (7409187).

131202013 is a wasteful number, since it uses less digits than its factorization.

131202013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 628.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 131202013 is about 11454.3447215456. The cubic root of 131202013 is about 508.1362358584.

Adding to 131202013 its reverse (310202131), we get a palindrome (441404144).

The spelling of 131202013 in words is "one hundred thirty-one million, two hundred two thousand, thirteen".