1534145231 has 2 divisors, whose sum is σ = 1534145232. Its totient is φ = 1534145230.

The previous prime is 1534145213. The next prime is 1534145279. The reversal of 1534145231 is 1325414351.

Together with previous prime (1534145213) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is an emirp because it is prime and its reverse (1325414351) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1534145231 - 2⁶ = 1534145167 is a prime.

It is a super-2 number, since 2×1534145231² = 4707203179600086722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1534145194 and 1534145203.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1534145531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 767072615 + 767072616.

It is an arithmetic number, because the mean of its divisors is an integer number (767072616).

Almost surely, 2^1534145231 is an apocalyptic number.

1534145231 is a deficient number, since it is larger than the sum of its proper divisors (1).

1534145231 is an equidigital number, since it uses as much as digits as its factorization.

1534145231 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7200, while the sum is 29.

The square root of 1534145231 is about 39168.1660408041. The cubic root of 1534145231 is about 1153.3350525570.

Adding to 1534145231 its reverse (1325414351), we get a palindrome (2859559582).

The spelling of 1534145231 in words is "one billion, five hundred thirty-four million, one hundred forty-five thousand, two hundred thirty-one".