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311320303157 is a prime number
BaseRepresentation
bin1001000011111000010…
…00101101011000110101
31002202120110002000022102
410201330020231120311
520100040444200112
6355004002311445
731330543625543
oct4417410553065
91082513060272
10311320303157
11110037216646
1250404658585
1323485212446
14110d478cd93
15817141cbc2
hex487c22d635

311320303157 has 2 divisors, whose sum is σ = 311320303158. Its totient is φ = 311320303156.

The previous prime is 311320303097. The next prime is 311320303171. The reversal of 311320303157 is 751303023113.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 180630100036 + 130690203121 = 425006^2 + 361511^2 .

It is a cyclic number.

It is not a de Polignac number, because 311320303157 - 26 = 311320303093 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (311320303057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155660151578 + 155660151579.

It is an arithmetic number, because the mean of its divisors is an integer number (155660151579).

Almost surely, 2311320303157 is an apocalyptic number.

It is an amenable number.

311320303157 is a deficient number, since it is larger than the sum of its proper divisors (1).

311320303157 is an equidigital number, since it uses as much as digits as its factorization.

311320303157 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5670, while the sum is 29.

The spelling of 311320303157 in words is "three hundred eleven billion, three hundred twenty million, three hundred three thousand, one hundred fifty-seven".