61429031 has 4 divisors (see below), whose sum is σ = 61626864. Its totient is φ = 61231200.

The previous prime is 61429009. The next prime is 61429051. The reversal of 61429031 is 13092416.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 61429031 - 2⁶ = 61428967 is a prime.

It is a super-2 number, since 2×61429031² = 7547051699197922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61429051) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 98450 + ... + 99071.

It is an arithmetic number, because the mean of its divisors is an integer number (15406716).

Almost surely, 2^61429031 is an apocalyptic number.

61429031 is a deficient number, since it is larger than the sum of its proper divisors (197833).

61429031 is a wasteful number, since it uses less digits than its factorization.

61429031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197832.

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 61429031 is about 7837.6674463771. The cubic root of 61429031 is about 394.5704479603.

The spelling of 61429031 in words is "sixty-one million, four hundred twenty-nine thousand, thirty-one".