61310001 has 4 divisors (see below), whose sum is σ = 81746672. Its totient is φ = 40873332.

The previous prime is 61309987. The next prime is 61310003. The reversal of 61310001 is 10001316.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 61310001 - 2¹⁵ = 61277233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61310003) 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, 10218331 + ... + 10218336.

It is an arithmetic number, because the mean of its divisors is an integer number (20436668).

Almost surely, 2^61310001 is an apocalyptic number.

It is an amenable number.

61310001 is a deficient number, since it is larger than the sum of its proper divisors (20436671).

61310001 is a wasteful number, since it uses less digits than its factorization.

61310001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20436670.

The product of its (nonzero) digits is 18, while the sum is 12.

The square root of 61310001 is about 7830.0703061978. The cubic root of 61310001 is about 394.3154323364.

Adding to 61310001 its reverse (10001316), we get a palindrome (71311317).

The spelling of 61310001 in words is "sixty-one million, three hundred ten thousand, one".