611129431 has 8 divisors (see below), whose sum is σ = 667246464. Its totient is φ = 555105720.

The previous prime is 611129429. The next prime is 611129473. The reversal of 611129431 is 134921116.

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 611129431 - 2¹ = 611129429 is a prime.

It is a super-2 number, since 2×611129431² = 746958362868767522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 611129431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (611129131) 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, 9261 + ... + 36166.

It is an arithmetic number, because the mean of its divisors is an integer number (83405808).

Almost surely, 2^611129431 is an apocalyptic number.

611129431 is a deficient number, since it is larger than the sum of its proper divisors (56117033).

611129431 is a wasteful number, since it uses less digits than its factorization.

611129431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46661.

The product of its digits is 1296, while the sum is 28.

The square root of 611129431 is about 24721.0321588723. The cubic root of 611129431 is about 848.6157080410.

The spelling of 611129431 in words is "six hundred eleven million, one hundred twenty-nine thousand, four hundred thirty-one".