61031352503 has 24 divisors (see below), whose sum is σ = 72090483696. Its totient is φ = 51439829760.

The previous prime is 61031352491. The next prime is 61031352521. The reversal of 61031352503 is 30525313016.

It is not a de Polignac number, because 61031352503 - 2⁶ = 61031352439 is a prime.

It is a super-3 number, since 3×61031352503³ (a number of 33 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61031352203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 83600 + ... + 359237.

It is an arithmetic number, because the mean of its divisors is an integer number (3003770154).

Almost surely, 2^61031352503 is an apocalyptic number.

61031352503 is a deficient number, since it is larger than the sum of its proper divisors (11059131193).

61031352503 is a wasteful number, since it uses less digits than its factorization.

61031352503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 442943 (or 442932 counting only the distinct ones).

The product of its (nonzero) digits is 8100, while the sum is 29.

Adding to 61031352503 its reverse (30525313016), we get a palindrome (91556665519).

The spelling of 61031352503 in words is "sixty-one billion, thirty-one million, three hundred fifty-two thousand, five hundred three".