61431153 has 12 divisors (see below), whose sum is σ = 95281200. Its totient is φ = 35103432.

The previous prime is 61431143. The next prime is 61431163. The reversal of 61431153 is 35113416.

It is an interprime number because it is at equal distance from previous prime (61431143) and next prime (61431163).

It is not a de Polignac number, because 61431153 - 2²⁴ = 44653937 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (61431103) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 208803 + ... + 209096.

It is an arithmetic number, because the mean of its divisors is an integer number (7940100).

Almost surely, 2^61431153 is an apocalyptic number.

It is an amenable number.

61431153 is a deficient number, since it is larger than the sum of its proper divisors (33850047).

61431153 is a wasteful number, since it uses less digits than its factorization.

61431153 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 417916 (or 417909 counting only the distinct ones).

The product of its digits is 1080, while the sum is 24.

The square root of 61431153 is about 7837.8028171165. The cubic root of 61431153 is about 394.5749912457.

Adding to 61431153 its reverse (35113416), we get a palindrome (96544569).

The spelling of 61431153 in words is "sixty-one million, four hundred thirty-one thousand, one hundred fifty-three".