1420238685831 has 16 divisors (see below), whose sum is σ = 2164669403904. Its totient is φ = 811378900224.

The previous prime is 1420238685829. The next prime is 1420238685857. The reversal of 1420238685831 is 1385868320241.

It is not a de Polignac number, because 1420238685831 - 2¹ = 1420238685829 is a prime.

It is a super-2 number, since 2×1420238685831² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1420238685431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7658826 + ... + 7842071.

It is an arithmetic number, because the mean of its divisors is an integer number (135291837744).

Almost surely, 2^{1420238685831} is an apocalyptic number.

1420238685831 is a deficient number, since it is larger than the sum of its proper divisors (744430718073).

1420238685831 is a wasteful number, since it uses less digits than its factorization.

1420238685831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15505270.

The product of its (nonzero) digits is 2211840, while the sum is 51.

The spelling of 1420238685831 in words is "one trillion, four hundred twenty billion, two hundred thirty-eight million, six hundred eighty-five thousand, eight hundred thirty-one".