61403031 has 24 divisors (see below), whose sum is σ = 97999200. Its totient is φ = 36850176.

The previous prime is 61403029. The next prime is 61403039. The reversal of 61403031 is 13030416.

It is not a de Polignac number, because 61403031 - 2¹ = 61403029 is a prime.

It is a super-2 number, since 2×61403031² = 7540664431973922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 61402995 and 61403013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61403039) 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, 5206 + ... + 12243.

It is an arithmetic number, because the mean of its divisors is an integer number (4083300).

Almost surely, 2^61403031 is an apocalyptic number.

61403031 is a deficient number, since it is larger than the sum of its proper divisors (36596169).

61403031 is a wasteful number, since it uses less digits than its factorization.

61403031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17495 (or 17492 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 61403031 is about 7836.0086140841. The cubic root of 61403031 is about 394.5147724424.

Adding to 61403031 its reverse (13030416), we get a palindrome (74433447).

The spelling of 61403031 in words is "sixty-one million, four hundred three thousand, thirty-one".