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202131013 = 738974231
BaseRepresentation
bin11000000110001…
…00011001000101
3112002100022121211
430003010121011
5403221143023
632020211421
75003041150
oct1403043105
9462308554
10202131013
11a4109027
1257839b71
1332b52266
141cbb8c97
1512b2aa0d
hexc0c4645

202131013 has 8 divisors (see below), whose sum is σ = 231603840. Its totient is φ = 172807440.

The previous prime is 202130993. The next prime is 202131019. The reversal of 202131013 is 310131202.

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

It is a cyclic number.

It is not a de Polignac number, because 202131013 - 225 = 168576581 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 202130984 and 202131002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202131019) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34393 + ... + 39838.

It is an arithmetic number, because the mean of its divisors is an integer number (28950480).

Almost surely, 2202131013 is an apocalyptic number.

It is an amenable number.

202131013 is a deficient number, since it is larger than the sum of its proper divisors (29472827).

202131013 is an equidigital number, since it uses as much as digits as its factorization.

202131013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74627.

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

The square root of 202131013 is about 14217.2786777217. The cubic root of 202131013 is about 586.8732539417.

Adding to 202131013 its reverse (310131202), we get a palindrome (512262215).

The spelling of 202131013 in words is "two hundred two million, one hundred thirty-one thousand, thirteen".

Divisors: 1 7 389 2723 74231 519617 28875859 202131013