31401011303 has 4 divisors (see below), whose sum is σ = 32766272688. Its totient is φ = 30035749920.

The previous prime is 31401011293. The next prime is 31401011309. The reversal of 31401011303 is 30311010413.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 31401011303 - 2¹⁶ = 31400945767 is a prime.

It is a super-2 number, since 2×31401011303² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31401011309) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 682630658 + ... + 682630703.

It is an arithmetic number, because the mean of its divisors is an integer number (8191568172).

Almost surely, 2^31401011303 is an apocalyptic number.

31401011303 is a deficient number, since it is larger than the sum of its proper divisors (1365261385).

31401011303 is a wasteful number, since it uses less digits than its factorization.

31401011303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1365261384.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 31401011303 its reverse (30311010413), we get a palindrome (61712021716).

The spelling of 31401011303 in words is "thirty-one billion, four hundred one million, eleven thousand, three hundred three".