1516242431 has 8 divisors (see below), whose sum is σ = 1666157904. Its totient is φ = 1368339520.

The previous prime is 1516242397. The next prime is 1516242437. The reversal of 1516242431 is 1342426151.

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 1516242431 - 2²² = 1512048127 is a prime.

It is a super-2 number, since 2×1516242431² = 4597982219129579522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1516242394 and 1516242403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1516242437) 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, 501560 + ... + 504573.

It is an arithmetic number, because the mean of its divisors is an integer number (208269738).

Almost surely, 2^1516242431 is an apocalyptic number.

1516242431 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1516242431 is a deficient number, since it is larger than the sum of its proper divisors (149915473).

1516242431 is a wasteful number, since it uses less digits than its factorization.

1516242431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1006281.

The product of its digits is 5760, while the sum is 29.

The square root of 1516242431 is about 38938.9577544135. The cubic root of 1516242431 is about 1148.8311832235.

Adding to 1516242431 its reverse (1342426151), we get a palindrome (2858668582).

The spelling of 1516242431 in words is "one billion, five hundred sixteen million, two hundred forty-two thousand, four hundred thirty-one".