61206031 has 2 divisors, whose sum is σ = 61206032. Its totient is φ = 61206030.

The previous prime is 61206017. The next prime is 61206097. The reversal of 61206031 is 13060216.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61206031 - 2⁹ = 61205519 is a prime.

It is a super-2 number, since 2×61206031² = 7492356461545922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61200031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30603015 + 30603016.

It is an arithmetic number, because the mean of its divisors is an integer number (30603016).

Almost surely, 2^61206031 is an apocalyptic number.

61206031 is a deficient number, since it is larger than the sum of its proper divisors (1).

61206031 is an equidigital number, since it uses as much as digits as its factorization.

61206031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 61206031 is about 7823.4283405678. The cubic root of 61206031 is about 394.0924117795.

Adding to 61206031 its reverse (13060216), we get a palindrome (74266247).

The spelling of 61206031 in words is "sixty-one million, two hundred six thousand, thirty-one".