611621431 has 8 divisors (see below), whose sum is σ = 625968000. Its totient is φ = 597378912.

The previous prime is 611621399. The next prime is 611621443. The reversal of 611621431 is 134126116.

611621431 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 611621431 - 2⁵ = 611621399 is a prime.

It is a super-2 number, since 2×611621431² = 748161549716975522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 611621396 and 611621405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (611021431) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14056 + ... + 37693.

It is an arithmetic number, because the mean of its divisors is an integer number (78246000).

Almost surely, 2^611621431 is an apocalyptic number.

611621431 is a deficient number, since it is larger than the sum of its proper divisors (14346569).

611621431 is a wasteful number, since it uses less digits than its factorization.

611621431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52025.

The product of its digits is 864, while the sum is 25.

The square root of 611621431 is about 24730.9811976800. The cubic root of 611621431 is about 848.8433777259.

Adding to 611621431 its reverse (134126116), we get a palindrome (745747547).

The spelling of 611621431 in words is "six hundred eleven million, six hundred twenty-one thousand, four hundred thirty-one".