6145721031 has 8 divisors (see below), whose sum is σ = 8256847104. Its totient is φ = 4065871160.

The previous prime is 6145720991. The next prime is 6145721033. The reversal of 6145721031 is 1301275416.

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 6145721031 - 2²⁶ = 6078612167 is a prime.

It is a super-2 number, since 2×6145721031² = 75539773981751405922, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 6145721031.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6145721033) 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, 7818591 + ... + 7819376.

It is an arithmetic number, because the mean of its divisors is an integer number (1032105888).

Almost surely, 2^6145721031 is an apocalyptic number.

6145721031 is a deficient number, since it is larger than the sum of its proper divisors (2111126073).

6145721031 is a wasteful number, since it uses less digits than its factorization.

6145721031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15638101.

The product of its (nonzero) digits is 5040, while the sum is 30.

The square root of 6145721031 is about 78394.6492498053. The cubic root of 6145721031 is about 1831.7137867637.

Adding to 6145721031 its reverse (1301275416), we get a palindrome (7446996447).

The spelling of 6145721031 in words is "six billion, one hundred forty-five million, seven hundred twenty-one thousand, thirty-one".