15242031 has 48 divisors (see below), whose sum is σ = 26817024. Its totient is φ = 8154432.

The previous prime is 15242027. The next prime is 15242041. The reversal of 15242031 is 13024251.

It is not a de Polignac number, because 15242031 - 2² = 15242027 is a prime.

It is a super-2 number, since 2×15242031² = 464639018009922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 15241995 and 15242013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15242041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 97005 + ... + 97161.

It is an arithmetic number, because the mean of its divisors is an integer number (558688).

Almost surely, 2^15242031 is an apocalyptic number.

15242031 is a deficient number, since it is larger than the sum of its proper divisors (11574993).

15242031 is a wasteful number, since it uses less digits than its factorization.

15242031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260 (or 257 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 15242031 is about 3904.1043787276. The cubic root of 15242031 is about 247.9405804142.

Adding to 15242031 its reverse (13024251), we get a palindrome (28266282).

The spelling of 15242031 in words is "fifteen million, two hundred forty-two thousand, thirty-one".