31400233013 has 16 divisors (see below), whose sum is σ = 32098314240. Its totient is φ = 30709854000.

The previous prime is 31400232991. The next prime is 31400233069. The reversal of 31400233013 is 31033200413.

It is a cyclic number.

It is not a de Polignac number, because 31400233013 - 2¹² = 31400228917 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31400223013) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9851006 + ... + 9854192.

It is an arithmetic number, because the mean of its divisors is an integer number (2006144640).

Almost surely, 2^31400233013 is an apocalyptic number.

It is an amenable number.

31400233013 is a deficient number, since it is larger than the sum of its proper divisors (698081227).

31400233013 is a wasteful number, since it uses less digits than its factorization.

31400233013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4328.

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 31400233013 its reverse (31033200413), we get a palindrome (62433433426).

The spelling of 31400233013 in words is "thirty-one billion, four hundred million, two hundred thirty-three thousand, thirteen".