61406831 has 2 divisors, whose sum is σ = 61406832. Its totient is φ = 61406830.

The previous prime is 61406819. The next prime is 61406843. The reversal of 61406831 is 13860416.

It is a balanced prime because it is at equal distance from previous prime (61406819) and next prime (61406843).

It is a cyclic number.

It is not a de Polignac number, because 61406831 - 2¹⁸ = 61144687 is a prime.

It is a super-2 number, since 2×61406831² = 7541597786925122, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 61406794 and 61406803.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61456831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30703415 + 30703416.

It is an arithmetic number, because the mean of its divisors is an integer number (30703416).

Almost surely, 2^61406831 is an apocalyptic number.

61406831 is a deficient number, since it is larger than the sum of its proper divisors (1).

61406831 is an equidigital number, since it uses as much as digits as its factorization.

61406831 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 61406831 is about 7836.2510807146. The cubic root of 61406831 is about 394.5229106140.

The spelling of 61406831 in words is "sixty-one million, four hundred six thousand, eight hundred thirty-one".