1401215071531 has 16 divisors (see below), whose sum is σ = 1529876556000. Its totient is φ = 1272767097600.

The previous prime is 1401215071471. The next prime is 1401215071537. The reversal of 1401215071531 is 1351705121041.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1401215071531 - 2⁹ = 1401215071019 is a prime.

It is a super-2 number, since 2×1401215071531² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1401215071493 and 1401215071502.

It is not an unprimeable number, because it can be changed into a prime (1401215071537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 80794921 + ... + 80812261.

It is an arithmetic number, because the mean of its divisors is an integer number (95617284750).

Almost surely, 2^{1401215071531} is an apocalyptic number.

1401215071531 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1401215071531 is a deficient number, since it is larger than the sum of its proper divisors (128661484469).

1401215071531 is a wasteful number, since it uses less digits than its factorization.

1401215071531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23070.

The product of its (nonzero) digits is 4200, while the sum is 31.

The spelling of 1401215071531 in words is "one trillion, four hundred one billion, two hundred fifteen million, seventy-one thousand, five hundred thirty-one".