10420531215 has 8 divisors (see below), whose sum is σ = 16672849968. Its totient is φ = 5557616640.

The previous prime is 10420531193. The next prime is 10420531217. The reversal of 10420531215 is 51213502401.

It is a happy number.

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

It is not a de Polignac number, because 10420531215 - 2¹⁰ = 10420530191 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10420531217) 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, 347351026 + ... + 347351055.

It is an arithmetic number, because the mean of its divisors is an integer number (2084106246).

Almost surely, 2^10420531215 is an apocalyptic number.

10420531215 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

10420531215 is a deficient number, since it is larger than the sum of its proper divisors (6252318753).

10420531215 is an equidigital number, since it uses as much as digits as its factorization.

10420531215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 694702089.

The product of its (nonzero) digits is 1200, while the sum is 24.

The spelling of 10420531215 in words is "ten billion, four hundred twenty million, five hundred thirty-one thousand, two hundred fifteen".