1231502542030 has 32 divisors (see below), whose sum is σ = 2219887010880. Its totient is φ = 491894158080.

The previous prime is 1231502542027. The next prime is 1231502542087. The reversal of 1231502542030 is 302452051321.

It is a super-2 number, since 2×1231502542030² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1231502542030.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31389066 + ... + 31428274.

It is an arithmetic number, because the mean of its divisors is an integer number (69371469090).

Almost surely, 2^{1231502542030} is an apocalyptic number.

1231502542030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1231502542030 is a deficient number, since it is larger than the sum of its proper divisors (988384468850).

1231502542030 is a wasteful number, since it uses less digits than its factorization.

1231502542030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43644.

The product of its (nonzero) digits is 7200, while the sum is 28.

Adding to 1231502542030 its reverse (302452051321), we get a palindrome (1533954593351).

The spelling of 1231502542030 in words is "one trillion, two hundred thirty-one billion, five hundred two million, five hundred forty-two thousand, thirty".