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2145131 is a prime number
BaseRepresentation
bin1000001011101101101011
311000222120022
420023231223
51022121011
6113551055
724143012
oct10135553
94028508
102145131
11123573a
1287548b
135a1511
143dba79
152c58db
hex20bb6b

2145131 has 2 divisors, whose sum is σ = 2145132. Its totient is φ = 2145130.

The previous prime is 2145113. The next prime is 2145137. The reversal of 2145131 is 1315412.

Together with previous prime (2145113) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2145131 - 26 = 2145067 is a prime.

It is a super-2 number, since 2×21451312 = 9203174014322, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2145137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1072565 + 1072566.

It is an arithmetic number, because the mean of its divisors is an integer number (1072566).

22145131 is an apocalyptic number.

2145131 is a deficient number, since it is larger than the sum of its proper divisors (1).

2145131 is an equidigital number, since it uses as much as digits as its factorization.

2145131 is an evil number, because the sum of its binary digits is even.

The product of its digits is 120, while the sum is 17.

The square root of 2145131 is about 1464.6265735675. The cubic root of 2145131 is about 128.9687843866.

The spelling of 2145131 in words is "two million, one hundred forty-five thousand, one hundred thirty-one".