31450143512305 has 32 divisors (see below), whose sum is σ = 43291634906880. Its totient is φ = 21485831055360.

The previous prime is 31450143512297. The next prime is 31450143512321. The reversal of 31450143512305 is 50321534105413.

It is not a de Polignac number, because 31450143512305 - 2³ = 31450143512297 is a prime.

It is a super-2 number, since 2×31450143512305² (a number of 28 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 66021066 + ... + 66495724.

It is an arithmetic number, because the mean of its divisors is an integer number (1352863590840).

Almost surely, 2^{31450143512305} is an apocalyptic number.

31450143512305 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

31450143512305 is a deficient number, since it is larger than the sum of its proper divisors (11841491394575).

31450143512305 is a wasteful number, since it uses less digits than its factorization.

31450143512305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 481689.

The product of its (nonzero) digits is 108000, while the sum is 37.

Adding to 31450143512305 its reverse (50321534105413), we get a palindrome (81771677617718).

The spelling of 31450143512305 in words is "thirty-one trillion, four hundred fifty billion, one hundred forty-three million, five hundred twelve thousand, three hundred five".