31400121411465 has 32 divisors (see below), whose sum is σ = 50714332695936. Its totient is φ = 16589405306880.

The previous prime is 31400121411457. The next prime is 31400121411469. The reversal of 31400121411465 is 56411412100413.

It is not a de Polignac number, because 31400121411465 - 2³ = 31400121411457 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31400121411469) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 21803067 + ... + 23198576.

It is an arithmetic number, because the mean of its divisors is an integer number (1584822896748).

Almost surely, 2^{31400121411465} is an apocalyptic number.

It is an amenable number.

31400121411465 is a deficient number, since it is larger than the sum of its proper divisors (19314211284471).

31400121411465 is a wasteful number, since it uses less digits than its factorization.

31400121411465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45002089.

The product of its (nonzero) digits is 11520, while the sum is 33.

Adding to 31400121411465 its reverse (56411412100413), we get a palindrome (87811533511878).

The spelling of 31400121411465 in words is "thirty-one trillion, four hundred billion, one hundred twenty-one million, four hundred eleven thousand, four hundred sixty-five".