1230142531 has 8 divisors (see below), whose sum is σ = 1259861328. Its totient is φ = 1200732000.

The previous prime is 1230142483. The next prime is 1230142549. The reversal of 1230142531 is 1352410321.

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 1230142531 - 2⁹ = 1230142019 is a prime.

It is a super-2 number, since 2×1230142531² = 3026501293150171922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1230142231) 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, 68980 + ... + 84961.

It is an arithmetic number, because the mean of its divisors is an integer number (157482666).

Almost surely, 2^1230142531 is an apocalyptic number.

1230142531 is a deficient number, since it is larger than the sum of its proper divisors (29718797).

1230142531 is a wasteful number, since it uses less digits than its factorization.

1230142531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154133.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 1230142531 is about 35073.3877890346. The cubic root of 1230142531 is about 1071.4826538906.

Adding to 1230142531 its reverse (1352410321), we get a palindrome (2582552852).

The spelling of 1230142531 in words is "one billion, two hundred thirty million, one hundred forty-two thousand, five hundred thirty-one".