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2131362157 = 4762877213
BaseRepresentation
bin111111100001010…
…0000000101101101
312111112112102020011
41333002200011231
513331112042112
6551254253221
7103550164561
oct17702400555
95445472204
102131362157
119a4109a31
124b5957211
1327c74bb52
141630d16a1
15c71aeaa7
hex7f0a016d

2131362157 has 8 divisors (see below), whose sum is σ = 2177358336. Its totient is φ = 2085393072.

The previous prime is 2131362113. The next prime is 2131362169. The reversal of 2131362157 is 7512631312.

It is a happy number.

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 2131362157 - 211 = 2131360109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2131362187) 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, 291883 + ... + 299095.

It is an arithmetic number, because the mean of its divisors is an integer number (272169792).

Almost surely, 22131362157 is an apocalyptic number.

It is an amenable number.

2131362157 is a deficient number, since it is larger than the sum of its proper divisors (45996179).

2131362157 is an equidigital number, since it uses as much as digits as its factorization.

2131362157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13547.

The product of its digits is 7560, while the sum is 31.

The square root of 2131362157 is about 46166.6779939818. The cubic root of 2131362157 is about 1286.9225677473.

Adding to 2131362157 its reverse (7512631312), we get a palindrome (9643993469).

The spelling of 2131362157 in words is "two billion, one hundred thirty-one million, three hundred sixty-two thousand, one hundred fifty-seven".

Divisors: 1 47 6287 7213 295489 339011 45348131 2131362157