61123403 has 16 divisors (see below), whose sum is σ = 68781312. Its totient is φ = 53844000.

The previous prime is 61123379. The next prime is 61123427. The reversal of 61123403 is 30432116.

It is an interprime number because it is at equal distance from previous prime (61123379) and next prime (61123427).

It is a cyclic number.

It is not a de Polignac number, because 61123403 - 2⁸ = 61123147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61123463) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47000 + ... + 48282.

It is an arithmetic number, because the mean of its divisors is an integer number (4298832).

Almost surely, 2^61123403 is an apocalyptic number.

61123403 is a deficient number, since it is larger than the sum of its proper divisors (7657909).

61123403 is a wasteful number, since it uses less digits than its factorization.

61123403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1426.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 61123403 is about 7818.1457520310. The cubic root of 61123403 is about 393.9149906353.

Adding to 61123403 its reverse (30432116), we get a palindrome (91555519).

The spelling of 61123403 in words is "sixty-one million, one hundred twenty-three thousand, four hundred three".